I agree with you, and it's what I was saying in the chat room.
Up 10 -- they get a fluke TD, kick onsides, and are practically in FG range.
Up 13 -- they get a fluke TD, kick onsides, and need ANOTHER TD. Much more difficult.
And if we would have gone for it, failed, and somehow lost, the same people saying it's stupid to kick would be saying he was stupid for not kicking the FG and that EVERYONE knows you should go up by 13, but Jauron sucks, blah blah blah.