nah, its just the way it is.
more shaders - more performance.
ATI cards perform better when theyre stressed harder since they have more shaders.
Nvidia cards dont perform as well, since they have less...but perform betterr under lower
stress.
This is true for folding....though i guess you could carry it over to gaming as well.
The current work units stress the cards, but not as hard as the new ones which were supposed to be coming out (but held back for technical reasons) but for the few days they were out, the Nvidia guys were mad cause they all lost about 20-40% ppd, while the ATI guys gained some ppd, not as much but still the gap became smaller.
ATI- High performance under high stress
Nvidia - Higher performance, but under lower stress
Thats how it looks right now. If they lose the small work units and throw nothing but big ones, ill drop Nvidia from my main rig and move to ATI.