Well, when I left at the end of 07 they were just starting to overblock a lot of the flights. Not all of them were overblocked though, and often a 3 hour groundstop blew the block time/DOT On-Time right out of the water anyway.

Keep in mind it's a lot easier for AA conn to squeak in there, while many XE RJs are stuck at outstations even after groundstops are lifted. The cap on arrivals often forces CAL to squeeze in International arrivals and larger aircraft arrivals over the RJs. Why misconnect 150 when you can just misconnect 50? Especially if they are International Connections. So the XE RJ EDCs just keep getting pushed back more and more. They don't restrict AA conn as much, because there are a lot less of you to fit in.