but yes maybe time chance things.
last time i checked one of your games Starcraft2 for exampel it runs much better on my amd card than on my nvidia test card.
yes arma2 is just an exampel but in my tests nvidia isn't better in wine support.
i don't test "Dragons Age, The Witcher"
but my point is wine isn't magic magic writen for wine
wine still have many problems and this kind of problems don't care about your graphic card exampel "mouse escape windows bug"