I'll join everyone who's saying it's better. Commentary in a video game gets repetitive after a while and there are errors (comments about Michael Jordan leading the league in triple doubles year after year), but 2003's commentary is an improvement over both Live 2001 and Live 2002. Don Poier and Bob Elliott actually talk to each other sometimes, instead of Poier making a comment, Elliott responding, followed by silence. IMHO, they also better react to the game. Now, if only they'd stop declaring the game over when there's a 20 point deficit with two minutes left, only to start talking about how the losing team can win it from there...
