A LOT. I know, you're trying to get convo/topic going. That's my bad for going for the throat on the first reply. For that, I apologize, it bugs me too when someone does that to me.
Godfather II is a solid sequel. There is debate between which is better 1 or 2, and I like 1 better, but 2 isn't like a mile behind, it's right on it's tail. And I like 3 a lot too, despite a lot of people throwing out 3 as an oddball.
But I can actually watch BTTFII and Rocky IV at some unlimited rate, and not get sick of either. So of this list, they're likely going ot be my favorites to win.
Bride of Frankenstein, Poltergeist III, Dawn of the Dead, Halloween II, New Nightmare, At some point, you have to say, why are horror movies missing from the list? Sure, they might not win a bracket, but neither will Bill and Ted, ect. That's just bad diversity of taste. Mad Max 2, Short Circuit 2, The French Connection 2, I would put any of them on the list over a ton of films. Especially Short Circuit 2, because it's one of those movies that everyone knows and you can throw out a reference to it, while appreciate it.
Terminator II and Dark Knight is a good 1-2 on the right column, that's going to be an interesting quarterfinal.