ATI run: 922 / 36,6 = 25,1912568
Nvidia run: 743 / 29.5 = 25.1864407

So they seem valid, theres small rounding error(i'd guess at least) though.

However.. I believe that run wasn't ran with HD6xxx, but with something like HD5970, and the MinFPS and MaxFPS values were modified to make it look like better performer...