this is an old debate
saturn can handle PERFECT ports of neo games, PERFECT.
you know why the ports look like shit tho? cuz they were DONE LIKE SHIT.
i mean, saturn can handle the vs's games (marvel vs. sf and xmen vs. sf) with no problem and 1 second load times. arcade perfect with no slowdown, sprite scaling, etc. it also would have helped if snk used the 4meg cart instead of the 1meg cart
dreamcast is even more capeable than saturn, (16 mega as opposed to saturn's 6 total) and we can see that in marvel vs. capcom (1 not 2) but the snk ports are still shitty (ok motw and lb2 are alright, but still, not perfect) (imo the only flaw with dc ports was the fronked up resolution that they used, both snk and capcom)
and im positive that ps2, gc, and xbox can handle perfect neo ports, if DONE CORRECTLY.
hell xbox CAN and it has been seen if you ever ran a neo emu on your pentium based pc.
the ports arent crappy because of the system, but because of the port job.