They meant NV's 8x(S) and 16x AA modes look better overall than ATI's 6x, but they're too slow to be useful for brand new, eyeball-exploding games.
So, what cmdrdredd said. :)
As for the article, directly comparing a X1950XTX to a 7950GX2, HQ AF to HQ filtering, and ignoring AAA/TrAA...