I can tell you Op2 that Revelation can be tested against actual history. Know what?
It's 100% accurate. John has been spot on in every prediction made. The prophecies in the Old Testament were also all 100% accurate and fulfilled with 100% precision through Christ.
I've examined the claims in the Qu'ran, and it's reliability does not hold up to the Bible's historical accuracy. For instance, Israel is not supposed to exist in the Qu'ran. However in Revelation, it was predicted to come out of nowhere toward the end or latter days.
Look a what we have in Israel today, and where it came from after thousands of years. I could go one but to answer your question, yes you are correct...all claims should be tested however not all claims can be true since Truth is not relative.
If you take the time to examine it's claims, I think you will find the Bible's claims to be 100% correct 100% of the time.
Okay, so you claim the Bible is right and the Qu'ran is wrong and Muslims claim the Qu'ran is right and the Bible is wrong. And I don't see evidence that either is right. Fine.