Well, Halladay was rocked for 6 runs in 6 1/3 innings in his first start, so you don't really know how either will pitch. It should be a good showdown though, IMO.
Hopefully the bats will be in the clubhouse for Pedro tomorrow.
We shouldn't trade Pedro, regardless of his "bitching." If we show him that he is important, and if he plays well, there is no reason he shouldn't finish his career here.