It doesn't matter if it had original ideas or not. Not all of the elements that made Sonic distinct and the source of much copying were original to it. Sonic borrowed from Castle of Illusion and Sega's own Psycho Fox. Yet, any elements of Psycho Fox that went on to be used in other games did so via Sonic, and we don't generally call anything a rip-off of Psycho Fox. Likewise, if a game plays and looks like Super Mario World, I'm going to say it was influenced by that, regardless of where those elements originally appeared.

More games from 1992 on used more thematic and sylistic and gameplay elements that appeared in Sonic the Hedgehog than in Super Mario World.