Fatigue might be a factor, but it's this kind of series that provides the necessary test for a championship level team. Even last year Toronto barely scraped by Philly. In 2008 we struggled with inferior teams in Atlanta and Cleveland, going to game 7's each time.
That was a great experience for our young players, and even for Kemba who hasn't even come close to this far in the playoffs. Battle tested. I haven't thought much about Miami yet, but we'll see.