GPU Cards comparison

[tethys]

Can we trust this chart?

http://www.golubev.com/gpuest.htm

Because I saw that the smaller 5850 is faster than the 6850:

Radeon HD 6850--> 960 775 744.00 2745M 744M 14171 353932 43237
Radeon HD 5850--> 1440 725 1044.00 3852M 1044M 19886 496646 60672