after watching a side by side (Snes is right screen) i think they tried to improve it, arcade has level intro pan shots, snes doesnt, but the background of the Sea is a little animated compared to static sea in arcade, ill forgive them....this agme and Batman Returns on snes is my childhood
detailed comparision
After watching the video I forgot how many more enemies were onscreen for the arcade version. No wonder it ate up quarters like it was candy.