Will just add, that with our undersized C-bet, I would be on board with folding to the turn jam, if we did not have the Q of spades. Having that card matter, because it gives us additional equity, and its a relevant blocker as well. Us having Qs makes it impossible for him to have AsQs, KsQs or Qs9s. Realistically this hand should have gone larger C-bet, check-jam, call, and then it would just be cooler city, as Jon Poker say.
Its pretty unlucky to run into two pair, when we flop top pair with a good kicker. Especially on this kind of board, since QJ is pretty much the only two pair, he should ever have. He could have a better one pair or a set, but AA, KK, QQ, JJ and AQ would mostly have 3-bet before the flop. So Hero happened to run into one of only two realistic hands, that he was behind to: QJ or 33. Pretty unlucky and totally fine to go broke, when the hand started with 20 BB.
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