I think you're overthinking this. The Cardinals had Carpenter, Garcia, Westbrook, Lynn, Wainwright and Lohse under contract this year. That's 6 major league starters and they had some good arms down in the minors as well. The Nationals have Strasburg, Zimmermann, Gonzalez, Detwiler and Lannan under contract. I read they declined to offer arbitration to Jackson because they like some other free agent starters better. Maybe they make a play on Greinke or Sanchez, Lerner certainly has the money to do so. I don't think them not wanting to possibly get locked in on Gonzalez without exploring other options is a slight against Jackson in any way. By the way, this is not my endorsement of the Brewers going after Jackson or any free agent pitcher for that matter. Just giving my opinion on why Jackson has bounced around so much.