Uhhh well you're wrong.
"You lied about not having an issue in MW2 with your 5870 while claiming it only happened on the 480. Later you found out it's a universal problem and even admitted it."
The issue was with COD4, NOT COD MW2. So genious, you were wrong. I didn't get any noticable hitch with the HD5870 from punkbuster in COD 4, but even Evenbalance suggests trying another GPU if you have this problem.
The issue with MW2 was resolved with the new monitor running 120Hz there was no longer tearing with the GTX 480. The HD5870 did not tear running COD MW2 with vsync off. Two different problems entirely.