The SNES version if I recall correctly was closer to the NEO GEO version graphically while the Genesis version shared similarities but it seemed to be a bit different. I personally enjoyed the Genesis version more because it played so much smoother and much faster than the SNES version that had a bunch of slowdown and generally seemed sluggish in comparison which took away from the flow and excitement of what should be a fast-paced arcade baseball game. I only recall playing the NEO GEO version once a while ago and I don't recall if it had any slowdown or not. Either way, Super Baseball 2020 was one of my favorite Genesis games and I would play that game to death back in 1997 when I first got it and the graphics seemed so awesome even then to me. I still think the game looks great today for Genesis when watching videos on Youtube.