Super Mario Bros, for NES, eh , it was good.
Super Mario Bros 2 (JP) HOLY MOTHER OF LORD GREATEST GAME EVER,(Exaggeration) PERFECT! I WOULD LOVE TO HAVE IT!
Super Mario Bros 2 (US) ... Wow...
Super Marios Bros 3 Eh, fine, not anything new though, minus the new 'suits'
Go ahead, call me a Sega Fanboy, I do enjoy the NES more than any other of my classic systems though.
Believe me, I don't want to like these games or give them any props, simply because I've become so sick of Mario as a character in the years since his NES heyday. But, playing those games now, if I'm completely honest with myself, I must admit they're pretty damn good. In particular in the case of SMB3, the sheer scope of what they crammed into that cartridge is really quite impressive for its time. And not only were the games good, but their lasting influence/impact on the gaming industry at large is indisputable.
So, I guess what I'm saying is that the SMB games are not overrated, IMO. If you happen to not like the games because they're not your type of thing, that's fine. I can't stand Jay-Z because I can't stand listening to hip hop, doesn't mean he's overrated, it simply means he's not my cup of tea and I personally don't listen to him.
I'm not calling you a fanboy, but I will say that I don't understand how you can simultaneously dislike the classic SMB games and like Sonic. Ok, so Mario wears goofy suits whereas Sonic runs quickly. Other than that, if you distill the gameplay down to its core elements, these games are essentially the same.