It's not a mistake because you have to consider that you are first to act after the flop and out of position against a preflopraise AQ is difficult to play. That's why we recommend to fold it.
Whether you play suited or unsuited: the equity differs only about 3%! So I recommend you to fold it against a raise in that position. Shorthanded play is different but in Full Ring games it is probably the best.
Thanks for Your reply Ill might do, or at least ill do 50%call 50% fold, of course against a player who usually tries to still I will never fold that hand.