They had no answer for Lebron James, period. I'm not sure any team in this league does if he really wants to dominate. The guy is, even beyond Michael Jordan, the single most gifted player to see the NBA court in almost anyones lifetime. He may not have the same intangibles as an MJ as far as will to win, but my god, the guy looks like an immortal on the basketball court. Between size, athletecism, strength, he may be a one in a 100 year type of player. He's a gladiator out there. His treatment is generally unfair, expectations are unreal.
Now it's a team sport and as far as that goes, the Thunder are a better team top to bottom. They cover just about every point needed on a basketball team - scoring, big bodies, defense, chemistry. They have role fillers all over the place whereas the Heat are 3 guys and a bunch of randoms. It's going to be interesting to see how the matchups take shape and who they put on James. Do they throw the smaller defender on him, a Sefalosha, or an Ibaka? Who defends Durant? A fun entertaining series with loads of talent.
I didn't hold out much hope for the Celts - their chance to win this thing was in game 6 on crowd adrenaline and when an old team like that lays an egg in their chance to tie off an improbably series on their home court because they looked tired/lifeless, it didn't seem like it was going to get much better in a game 7 away. Nice season, time to rebuild, unless they're content with semi's max for a year or two more.