I'm not even sure it's bad luck. I think you're getting about exactly what you should have expected.
07 Pfiester has about 1100 seasons stored in his performance history. That's a pretty big sample. His average season in WIS: 13-11, 1.39 WHIP, 3.49 ERA. You're playing in Coors. If I bump his WHIP up 15% to account for the fact that you are playing half your game in Coors, I get 1.60. You have 1.59. I'd say he's spot on. His road stats for you are 1.46 WHIP, pretty damn close to his average performance.
I have been playing here since 2006-07 and I can't remember 07 Pfiester ever being talked about as a cookie; he's never been one of those guys that you routinely see a lot of, so I don't think he's ever been considered a particularly good value for the price. He costs about $35K per inning. The way I evaluate pitchers, if I look at guys with 200+ IP who cost at least $30,000/IP, he's not in my top 150 for value per dollar. I wouldn't expect anything special from him in an open league.