I plugged the hand into ICMizer now, and as played with Hero opening to 2,5BB, KTo is part of Heros opening range. But its only winning Hero 0,03% of the price pool, and more importantly when calling this jam from BB, Hero is losing 0,36% of the price pool. Villain on the other hand is not supposed to rejam T9o, but its very close, since it only loses him 0,03% of the price pool. So as played the only real mistake made here is Hero calling off the jam with KTo. This is to loose due to the ICM implications, where calling and losing will leave Hero with the second shortest stack and a big risk of bubbling the tournament.
Now lets exploit the alternative, which is Hero open jamming. By taking this line KTo win Hero 0,17% of the price pool, so at least 5 times more, than we win by raising to 2,5BB. This is assuming, that both opponents play push or fold, so its not entirely correct, but it still goes a long way to show, how much more profitable jamming is with these stack sizes and ICM pressure. If the opponents defend correctly, SB will call 25% of the time, which is not the end of the world, since he is so short. BB will only call 9% of the time, so less than 1 in 10 times will we find ourself in this situation, where a huge percentage of our stack is at risk. And this is why, jamming is so much better than raising to 2,5BB. Especially if we are then also going to call off to wide, when we get jammed on.