Originally Posted by pseudogravy
Without history this is kind of gross. It would be helpful to know if he raises his oesd and fd on the flop. If we think he does, then I'm calling off even though he has TT and 44 and QT in his range. Also, if we think he will raise with all his tp hands (AQ, KQ, QJ), I call down. I have played against lots of older guys who overvalue tptk as the nuts.
All that being said, since there's no history, I might be folding since tptk and bluffs don't usually go for stacks this early in casual live mtts. This is usually 2p or a set. But if I think he's a competent player, I'm probably calling off since I have to be right less than 30% of the time with the odds he's giving me. Even if he's shoving 60% of his value combos here, calling is still +EV. The only reason might fold is 1) tournament life, and 2) you're still left with ~60BB if you fold, and 3) he's an unknown.
Here's the thing. Even if he gets to the river with the only other combo of AA, and all the combos of KK, QQ, TT, 44, QTs and J9s, and just two bluffs of KJs and J9s, your hand is still ahead 44/56. If we say he gets there with one combo of tptk, you're in even better shape. You would need a really good reason not to call here. If we take out his bluffs, your hand is still 25/75, which given the odds, is a clear fold. So if he has no bluffs at all, we fold.
However, when I put this in flopzilla, the most interesting part is that he needs only two combinations of a bluff (J9s and KJs), to give us 31% equity on the river, which is the exact odds we're getting at the river, for a break even call. Of course, this assumes that he shoves the only other combo of AA, all of his KK, and ever other 2p and set he has.