The article linked to in the article linked to is way too fast to call everything "luck".
In the same article, he talks about Dempster having a high BABIP and calls that luck and then talks about Dempster giving up too many HRs and calls that luck. The whole conception of BABIP as luck is that it excludes HRs which are not. And to defend the idea that the Cubs have a bad defense which might explain a higher BABIP this year, he says that they've had the 3rd-lowest BABIP among NL teams since 2008. If that's not a cherry picked statistic, I don't know what is not to mention, that the Cubs teams of 2008, 2009, and 2010 aren't taking the field today. The Cubs team of 2011 is. And if that team has defensive problems such as a Soriano who moves like The Thing in left field that's what is important.
All in all, the article made me look at Dempster. But I wouldn't jump and call him a must-start by any stretch. His best stat, his xFIP, is still at 3.92 which is better than what he's been showing so far but isn't an ace hiding behind a black cat by any means. Heck, it's not like he's Matt Garza.
0-3 to 4-3. Worst choke in the history of baseball. Enough said.