ProPlayer was the 4th best pitcher's park in the majors... Dodger Stadium was 6th best. ProPlayer allows less HR's and less R's than Dodger Stadium. If anything, ProPlayer will help him, not hurt him.
As for Dotel... the difference between Minute Maid park and Network Associates was negligible; they were almost identical for HR's and R's (both pretty much neutral). Oakland's fielding will help more than Houston's, though. They're IPAvg for righties was about 21 points lower than Houston's. The move should help him in the longrun.
Overall: Dotel looks to be under-rated, Mota looks to be over-rated.
"Jack, will you call me, if you're able?"
"I've got your phone number written, in the back of my Bible."