I'm arguing against the idea that Park's defense and baserunning are good enough to make him desireable at 3M when Carter is not desireable at 4M, despite Carter likely being better offensively. I don't think that position makes sense. Gun to my head, I'll assume Park is a run or two better at both, but we definitely don't know that, and I think defense and baserunning are terrible justifications for saying you'd love Park at 3M and want no part of Carter at 4M.