I easily think Mega Man 2 is better than Mega Man 3, plain and simple. I'm gonna be holding back a more detailed wall of text for the thread, because like many, MANY other nerds out there on the information superhighway, I eat, Drink and excrete Mega Man. I'm the kind of person who is so enraptured with the classic series that I will play ROM Hacks [Seriously folks, play Rockman 4 Minus Infinity. it is pure delicious fun juice and plays fairly differently than any other Mega Man game but in an incredibly good way] and quite frankly, a nice chillaxe run through Mega Man 2 or one of the later NES titles like Mega Man 6 is a form of catharsis for me after a particularly bad day.
That being said, I probably have more to talk about with Mega Man 3 than I do with Mega Man 2, because I feel that Mega Man 3 has far more glaring flaws in comparison to the second game.
Either way, I win this poll though. Seriously, Ys?!? that's like... the one game on that last retroactive that I didn't have a lot to say about. >_>;;