Question of the day: Is Bill's pitching this good?

I've been waiting for a while now for Bill's pitching to fall off the wagon, but yesterday his team posted 2 starts, 2 complete game wins, 12ks, a WHIP of 0.62 and an ERA of 0.50.

For the year, Bill is winning in every pitching category except for saves. Other than his lead in K's which is not that large (especially when factoring in innings pitched), he is actually crushing the competition. He has 35 wins (6 ahead of 2nd), a 3.07 ERA (0.47 better than 2nd) and an absurd 1.14 WHIP (0.08 ahead of 2nd).

After not following baseball super closely other than the sox for the past few years, I wasn't blown away by Bill's staff when first looking at it: Sabathia? Escobar? Haren?

But what's scary is that these pitchers still have some upside - Sabathia's ERA and WHIP are actually worse so far than last year's - only Haren has really been pitching much better than his prior stats would indicate, and it's difficult to write his performance off as just luck.

So for the nay-sayers out there - I'm thinking Mark might have something to say here - is Bill's pitching this good?