Calling an all in with AQ off is a bit stupid, indeed. You know you are either facing AK, AQ or a pair. If facing AQ, you are only playing to split, all others you are running behind, unless it's a real low pair, but then someone would not go all in.
Remember, AQ, AJ and all lower unpaired face cards look better than they are.
Here's some info about your hand:
Avoid Getting Trapped 
You can as well do some math using the
odds calculator.
BTW, how did the ME Stage 2 go?