CIRA International accuse Quran; Islam disparages the Bible?

In answer to the video "Yusuf 12:111 - The Quran Affirms the Bible"

The Quran condemns only the people that write the scriptures and manipulate it with their own hands. This is one of the miraculous qualities of the Quran, where it never assaults the Torah or Injeel in the context of corruption, but it lays blame always on the scribes. The Torah and Injeel are revealed by God, and considering the Torah and Injeel are from the same source as the one who revealed the Quran, it is only natural that the Quran never attacks the text per say. 

The Quran is therefore the official preserver of the Book and this means that if something is claimed to be in the Book but the Quran says otherwise, then it is not from the Book. If the Quran is silent then it may or may not be of the Book and if the Quran approves it then it certainly is part of the Book. A long time ago, the prophet Muhammad explained how to approach the previous scriptures and traditions

“Do not believe the people of the Book, nor disbelieve them. Say: We have faith in Allah, in what has been revealed to us and what has been revealed to Abraham, Ishmael, Isaac, Jacob, and the tribes of Israel, in what was given to Moses and Jesus, and in what was given to the prophets from their Lord. We make no distinction between any of them, and we are Muslims surrendering to Him (2:136)”.

This hadith encapsulates the notion of muhaymin/arbitrer. Muslims do not believe nor reject the current scriptures and traditions of the people of the book. This is because by rejecting them, they could inadvertently reject an authentic remnant of the teachings of the prophets. By believing in them on the other hand would carry the risk of accepting things that were never sent by God, nor approved by the prophets. The perfect way for Muslims to maintain the middle ground and not commit any faulty judgement would therefore be to hold fast by the Muhaymin/the arbitrer that has preserved the truth of the previous revelations. This reflects even in the attitude of the classical exegetes. They exhibited no interest in the Jews and Christians of whom they must have had some contemporary knowledge. With very few exceptions such as Ibn Kathir and Zamakshari, we find no reference to the varieties of Jewish and Christian belief and practices.

After declaring its status as the Guardian and Watcher, the Quran states that those legitimate differences between the scriptures that are not the subject of human corruption, were because the laws were subject to their respective time frames

"for every one of you did We appoint a law and a way".

Allah could have prescribed one and the same Law for all, making all of humanity into a single nation but He did not do so for many good reasons. One of these reasons is to test people whether they obey or not what is given to them. Those people, who understand the real nature and spirit of the Divine Way and the position of the regulations in it and are not prejudiced, will recognize and accept the Truth in whatever form it comes. Such people will never hesitate to submit to the new regulations sent by Allah to replace the former ones.

To demonstrate the unbiased nature of the Quranic message, it even tells its prophet in a hypothetical scenario that should a revelation be sent from God superseding both the Quran and the Torah, then Muhammad should be the first to follow it and nothing else 28:48-9. This verse isnt arguing from the angle of authenticity, that the new scripture supersedes the previous due to them being flawed. Neither does it give an indication as to whether one of the 2 is partially flawed while the other is pristine. The verse is arguing from the viewpoint of unconditional obedience to God, regardless of the level of authenticity of the current scriptures. Those, who do not understand the true spirit of the Way, but consider the regulations and their details alone to be the Way and who have become static and prejudiced because of their own additions to it, will reject every new thing that comes from Allah to replace what they already possess

5:48"and if Allah had pleased He would have made you (all) a single people, but that He might try you in what He gave you, therefore strive with one another to hasten to virtuous deeds; to Allah is your return, of all (of you), so He will let you know that in which you differed"  

22:67"therefore they should not dispute with you about the matter".

But the unbiased, who understand that God's guidance is indiscriminate, not only accept the new revelation but also

13:36"rejoice in that which has been revealed to you".

They read the book

2:121"as it ought to be read".

Consequently they cannot but recognize it as the truth 4:162,5:83.

Just like when the Bani Israil were ordered to follow the Injeel when it was revealed, the same proclamation is made regarding the Quran, now that it has been revealed. It guides them out of the labyrinths of assumptions and conjectures

27:76"Surely this Quran declares to the children of Israel most of what they differ in".

It brings them back to the path they deviated from, when they failed upholding both the Torah and the Injeel 5:66. The only way they can rightly say that they are following their own scriptures is by believing in the Quran as well because these revelations are interconnected:

5:68"Say: O followers of the Book! you follow no good till you keep up the Taurat and the Injeel and that which is revealed to you from your Lord; and surely that which has been revealed to you from your Lord shall make many of them increase in inordinacy and unbelief; grieve not therefore for the unbelieving people".

5:69"If only they had stood fast by the Law, the Gospel, and all the revelation that was sent to them from their Lord, they would have enjoyed happiness from every side. There is from among them a party on the right course: But many of them follow a course that is evil."

2:89-93"..but when there came to them (Prophet) that which they did recognize, they disbelieved in him; so Allah's curse is on the unbelievers. Evil is that for which they have sold their souls-- that they should deny what Allah has revealed, out of envy that Allah should send down of His grace on whomsoever of His servants He pleases..And when it is said to them, Believe in what Allah has revealed, they say: We believe in that which was revealed to us; and they deny what is besides that, while it is the truth verifying that which they have. Say: Why then did you kill Allah's Prophets before if you were indeed believers? And most certainly Musa came to you with clear arguments, then you took the calf (for a god) in his absence and you were unjust. And when We made a covenant with you and raised the mountain over you: Take hold of what We have given you with firmness and be obedient. They said: We hear and disobey. And they were made to imbibe (the love of) the calf into their hearts on account of their unbelief Say: Evil is that which your belief bids you if you are believers"