Have you read both books? I have read the bible (3 different ones actually) but only short translated passages of the Qur'an so i cannot judge. Hence the reason i accept a published work that is unbiased and accurate in what it eas designed to do.
However personal interpretations of those books differs greatly.
It will and it must.
There are simply way too many factors to consider beyond the frequency of words. For starters, there are cultural environments and the stances towards both texts.
By that perspective the Qur'an pretty much has to be, well, about as perfect a book and a religious scripture as one could possibly conceive, if not much better still.
The reality is quite, quite different.
But let's limit ourselves to the books themselves for a moment.
The Bible somewhat benefits from having so many authors; there is no compelling argument for an unified vision there, and in fact it is something of a mainstream view that the New Testament largely overrules the Old Testament. That alone provides significant protection against blind, fanact literalism. That is not true of the Qur'an, despite the existence of a more formalized and widely accepted doctrine of abrogation ("Naskh") in Islam.
Perhaps more significant still are the messages themselves. There is no lack of worrisome messages in the Bible, but quite a few are ignored by most Christians for being in the OT or other reasons. Meanwhile, the Qur'an and the environment built around it go out of their ways to insist that the text is not only literal instruction from the sole creator god, but also immutable, perfect and a source of duty to everyone who learns of it. In so many words, it teaches that fanatic theocracy is a virtue that ought to be pursued and demanded relentlessly.
A mere count of words can't acknowledge that. But human beings can and must.