Not a very good article, to be honest with you. It lumps in Lester with some good players and one of the greats in Palmer. They aren't equals, though. Stieb also isnt a very good comparison. There is a reason. Jon Lester is a strikeout pitcher, or he was. The two guys he is really comparing him to never were. Palmer's career K/9IP was 5.04. Stieb's was 5.21. Lester's is 8.21 and when Lester was dominant, he was between 8.55 and 9.96. Last yr, he slipped to 7.28, his lowest since his pretty solid 2008 campaign.
And the interesting thing about Lester's 2008 was that a lot of people, myself included, predicted that either he'd regress to the mean in terms of his FIP after 2008 or increase his K's to continue his solid ERA and production. Well, he upped the K's until last yr. The funny thing is, his xFIP was lower in 2012 than it was in his dominant 2008 campaign. Funny how that works, isnt it? His xFIP was lights out in 09 and 10, showed he was a little lucky in 11 and unlucky in 12. That being said, if Lester continues his trend of decreasing K amounts, he will increase his FIP and will likely even out above the 4.00ERA mark again. Last yr, based on his performance, his FIP was 4.11 and his xFIP was 3.82, an entire run below what his ERA was. Hence why I am predicting Lester to be right around the 4.00ERA mark, maybe a tick below. If he corrects his "mechanical" flaw (IT'S MENTAL BTW and maybe a little physical since he lost some of his velo) and starts K'ing batters at his prior rate, then he would be something more.