That wasn't a joke, he was comparing them to L.A. and Dallas women. He's always eyeing women and lets the viewers know about it. Anyway, the griping is like icing on the cake in this series.
Aside from that silliness, Barkley has dissed the Mavs for still not playiing D, for playing soft when people like Flip Saunders, Jeff Van Gundy, Magic Johnson have all commented on the difference between this year's Mavericks and the Mavericks from even a year ago. I don't put much stock into what he says, he's all fluffy entertainment.