I've denied nothing, I just said that I can't very well address 101 so-called contradictions on a message board.. I've seen all these skeptics list before, and am just saying that there are answers when a person fully dives into scripture, instead of pulling a verse here and a verse there. Admittedly, there are some translation discrepancies, and an occasional copyist/scribal error, but these are easily spotted and rectified. But I've found no direct contradictions, not within the KJV anyway. I will try and answer the contradiction between the verses you posted;
"And Joab gave up the sum of the number of the people unto the king: and there were in Israel eight hundred thousand valiant men that drew the sword; and the men of Judah were five hundred thousand men" (2 Samuel 24:9)
"And Joab gave the sum of the number of the people unto David. And all they of Israel were a thousand thousand and an hundred thousand men that drew sword: and Judah was four hundred threescore and ten thousand men that drew sword" (1 Chronicles 21:5).
Chronicles is a different classification, it list 1,100,000 of "all they of Israel that drew sword" i.e; all adults, but not necessarily "valiant". So this 1,100,000 describes the grand total for Israel. Samuel list 800,000 "valiant men", which didn't include the standing army of 12 units of 24,000 men each (288,000) plus the 12,000 men attached to Jerusalem, both mentioned in 1 Chronicles 27:1-15 and 2 Chronicals 1:14.
With regards to Judah; Samuel says 500,000 thousand men of Judah, while Chronicles list 470,000 "men that drew sword", not all the men by 30,000. Chronicles does not include the 30,000-man standing army of Judah mentioned in 2 Samuel 6:1. If Chronicles did include those, it would match Samuel; 470,000 + 30,000 = 500,000 men.