The only reason this debate even exists is because George went overboard with the whole Superjedi premise in the prequels, giving them crazy badass skills far, far, FAR beyond regular people. Obviously Jedi are supposed to be able to perform feats that are beyond regular people. That's a no-brainer. They have a great degree of athleticism, and they can do things through the force. The prequels, however, allow them to do every kind of aerial acrobatics short of actually flying. So the fact that Mace Windu dies by falling out of a high window was poorly done and left more ambiguous than it should have been, based on abilities of the Jedi as demonstrated throughout the previous two movies. That's George's own fault in his writing. That said, I think Mace is dead. Not everything has to be explicitly stated, and this is one of the few things in the prequels that is not explicitly stated. The fact that he's dead is implicitly stated well enough that we know George's intention is for Mace to be dead. It just doesn't necessarily hold continuity-wise. Speculation is fun, though, and what better place than a forum to demonstrate it?

Then again, though, I don't necessarily believe your canon heirarchy. Pretty much the only things you can accept as canon is what happens in the movies. The books are probably pretty reputable, though, because they're officially licensed adaptations, and I think George wouldn't let it through if it explicitly (there's that word again) defied canon. However, I think the buck stops there. I don't think that you can positively identify Boba Fett as alive simply because the Expanded Universe says he is. In the movie, he is implicitly dead. So just because no canon explicitly says that he is, that doesn't make the Expanded Universe canon. Based on that system, if the EU hadn't said anything about it either, does that mean that fanfiction that said Boba Fett was alive be considered canon? Because, really, fanfiction is just unpublished EU, right?