The only big difference between Street Fighter on 3DS and 360 was the resolution: everything else looked identical. The reason Capcom was interested in the 3DS in the first place wss because they had Resident Evil 5 running well on the thing. I also compared footage of DoA 3 and 4 compared to Dimensions, and it looks just as good as 4 (all if them are good looking games though, and 4 wasn't necessary that big of an upgrade IMO)
LOLOLOL
The animations were less flashy, the backgrounds didn't move, the textures were worse, the resolution was worse... Don't even try.