The Bulls might have three of the four best players on the court, but the Mavs have a deeper, and probably better, bench.
Kidd can't stay in front of Rose at all so I'm fairly sure it would have been Terry guarding him; either way that is a nightmare match-up for Dallas.
The Bulls can defend Dirk Nowitzki better than maybe any of the other teams in the NBA. Taj Gibson is a great defender and Joakim Noah actually has some length to alter shots by Nowitzki. Boozer would have neautralized a lot of Dirk's post-up ability too.
I still think Dallas runs a way better half-court offense than Chicago does. Their ball movement is incredible.
Imagine next year, if they have Caron Butler, Brendan Haywood, and Rodrique Beaubois... that's a scary prospect. I know they have a lot of unrestricted free agents (including Tyson) but they will be good again... no doubt.