AL-Only 4x4 Pitching Sleeper?

I had my AL-Only 4x4 draft yesterday. It is a keeper league, and very few SP were available. The top ones were Roy Halladay, Joe Blanton, John Lackey, Scott Kazmir and Mark Buerhle. They went for $26, $18, $17, $14 and $17 respectively.

One pitcher who did not fetch that type of bid was Mariners' $48MM man Carlos Silva. He went for $3. Looking at this comparison between Silva (as a Twin) and Blanton from 2007 looks favorable towards Silva, doesn't it?

PLAYER	W	ERA	WHIP	IP	K
Joe Blanton	14	3.95	1.22	230	140
Carlos Silva	13	4.19	1.31	202	89