Nope...  From what I saw, Atari's graphics were better than the Amiga - But the Amiga was better at everything else!  ( Can someone set me straight if I'm wrong please! ) I compared the two and went for the Atari - Maybe, in hindsight, I should have gone for the Amiga as it seemed to have a bigger "scene", but I was happy with my choice.
Oh - And don't talk to me about the C64...  I managed, just before getting into the PC side of things all those years back, to get myself a C128 on the cheap - Boy was I happy (Hey - On board sprite editor!)...  And then it promptly fried!!!!!  Ahhggr!