Specific objective historical facts are alleged in their refutations. Those facts are either true or they are not. Now, one can either offer similarly objective historical facts in a counter argument or not. To simply flick away their arguments on the sole basis of their authors' "Christian" perspective, however, is not reasonable.
You haven't stated any facts, you have merely asked people to go look at web sites that support your assertions. Anyone can do that, I can post all kinds of web sites that say the exact opposite of yours. Please tell us a few of these facts and as people have time I am sure they will be disputed admirably.