I am not surprised at all. AMD had always been a devoted MS "standard" follower in questions like this (even if it's merely a proprietary guideline which actually allows or even non-officially but explicitly supports deviations as other parties see fit). nVidia always tried to (and usually managed to) allow the users to force these things (V-sync, MSAA, AF, prerender frame limit, etc) through driver settings even if MS was pragmatically against it (their opinion is that game engines should be in full control of these things and "hacks" should be avoided - which would be fine in a perfect word) while AMD loved to follow MS guidelines and restrict driver overrides as much as possible (I think it's also convenient despite their overall believes). In other words, nVidia always cared more about the actual reality from the user's perspective while AMD preferred to pursue idealistic future outlooks. nVidia never thought twice before allowing the user to force certain things from the driver when reality proved that actual games lack the corresponding settings while disregarding the present. AMD always hesitated for month or years despite the constant demand from the users to acknowledge actual reality rather than fixing their views on idealized future outlooks and they even dared to go as far as saying that restricting these "hacks" is necessary in order to motivate game developers into providing these settings themselves in future games/patches which might never happen, thus punishing their customers in the present days (which could last for years and there is no guarantee it will ever be resolved despite these actions).