I haven't seen Kotter's thread yet, but it would seem at first blush that this removes the taxes thing from the table. Not that it was a game-changer either way of course.
As for those stating that Obama's charitable giving was much less, in percentage terms -- it's far easier to give a higher percentage of a given year's income when you have a relatively massive wealth base behind you. I don't think there's much argument about that, or about Romney being far, far wealthier than Obama.
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