Your logic is flawed still. You say playing at that park hurts the Angels. Their opponents also play there so both teams are at the same disadvantage. It means during Angels' home games both teams are as likely to play poorly. Think about it for a sec.
But they'll play far more games on the field than their opponents. Say they'll play 40 more home games (about 40 more road game). Other AL West teams will play, probably 9 more games there (71 games someplace else).
They will be more negatively affected by the field because they'll be on it more often.
