Ive seen Lox 1 and 2 in motion, it looks good but not as good as SoM2 imo. Its all subjective though.
I think the PCE properly programmed can equal the SNES in alot of areas but not trounce it, unless you count the Arcade card which I dont [world heroes 2 screenshots come to mind]...if you do, you might aswell bring in the 32x for comparison and say its a Genesis.
PCE definately has the speed advantage over the SNES though. The snes cpu has always been a bad move on Nintendo's part, its to slow. Graghics, not counting mode 7 id say is almost even to the SNES. Almost since theres no built in parallax.
Sound ? CD addon yes, Hucard? not horrible but no contest here, Snes has it beat.
Genesis is the weakestdog here, sound sucks for the most part. Colors are handicapped to 64, it had speed and good developers though.
It would have been nice to have Mortal kombat 1 or 2 out on the PCE, id like to have seen it for comparison's sake.