I believe it - C's/Heat was the biggest regular-season game (hype-wise) that I can remember. For all the hype the Heat are undeservedly getting, they're getting a lot of casual fans to pay attention to the league again. And the Lakers/Celtics being strong is always good for the league too.
And I'd love to see what the Chinese ratings looked like. Stern wasn't just looking for American viewers by picking the Rockets.