I'm running Tiger A393 and I think WoW runs the same or just barely better. There are some hiccups though for some reasons (beta maybe? )
Well if you were playing it on a PowerBook 17" 1 Ghz, GeForce 4MX I can see why

I was told by Blizzard employee that WoW is as much dependant on the CPU as it is the GPU. Also I think I read somewhere else the video improvements in Tiger were more for modern video cards. Hopefully my $500 GF6800 GT see's bigger boosts
