Is that even a fair comparison? It's an NES game against a 16 bit CD game which is a remake of said NES game... That's like comparing the original Metroid to Metroid Zero Mission, yeah the remake is easier, but it's so much better than the original that you don't wanna go back to the original when you play the remake (unless you're a glutton for punishment)
Okay okay, SOME people might prefer the NES game, but this is a forum for PC engine fans, I imagine most people over here are going to prefer the PC engine remake, me included, that game rocks!
Also yeah, Sunsoft rocks! They were one of the best developers for the NES, way up there with Hudson, Natsume and Konami, Acclaim isn't even worth the comparison...