Thanks for confirming that after all these years, ATI barely touched 8800 series, and it's Q2 2008 for god sake!!!! how old is 8800 again???
What does that matter? The 3870x2 kept up with the 8800GTX so ATI did have a lead for a short time. The GTX280 doesn't really beat out the 9800GTX2. Since the 8800GTX launch I don't think either company has been especially impressive.
The 4850 is a really nice card for the price point and seems to do fairly well in crossfire. The 4870 hasn't impressed me all that much in comparison since it's not a huge improvement on the 4850. If I were buying now I'd definitely consider a 4800 series card even though my last 2 builds have used nvidia cards.