For the last time, a "#5 caliber pitcher" is a replacement-level AAA player. At worst you might call Fister a fourth starter, but he's put up 5 fWAR in the three years he's been in the majors, two of which are incomplete... he's a far better pitcher than you're giving him credit for. Of course, the Safeco effect is very real, but that logic needs to be applied to all Mariners pitchers, not just Fister.