Do Americnas like Presidents with Maturity?

cos quotes Joe Klein saying "It is striking to me that such a young man is gonna bring to American politics a quality that we haven't seen in recent presidents, and that quality is maturity."

Going back through Kennedy, the only Presidents I'd consider mature are GWHB (pretty much), Ford, and maybe Johnson. Their reelection history is lousy.

OTOH, maturity has been strongly negatively correlated with being personally engaging. Obama's not Clinton in that regard, but he's a lot better than the three three I consider mature. Somewhere in the second-through-fourth group (out of eleven) with Kennedy and Reagan.