The Master System was rubbish but I'll give you that Sega rocked the box with the MegaDrive and the Dreamcast. The NES was, and is, a classic console with some fantastic games. I had both a NEs and a MasterSystem and I can't remember a single game from the Master System. I could name dozens from the NES.
A Gamer who does not appreciate Nintendo is not a Gamer at all. Ifso factso.