Can you select an allin hand, go to the replayer and click on the icm button. If you don't get a table explaining the luck calculation, it means we were unable to determine the prize structure for a tournament. It will fail for MTTs, but should work for SNGs.
If you lose with AA vs A2 on the first hand, I would expect the $EV diff to be a little less than twice the buy-in. Less because you are not 100% to win and doubling up doesn't give you quite double the ICM EV.