Expected value by starting hand:
AA 2.32
KK 1.67
QQ 1.22
JJ 0.86
AK s 0.77
AQ s 0.59
TT 0.58
AK 0.51
AJ s 0.43
KQ s 0.39
99 0.38
AT s 0.33
AQ 0.31


AQ is hard to over value preflop, although many players manage.
When these hands are truly overvalued is post flop.

The pre flop game is more a game of feel and heart.
The post flop game is analytical. You already have a full round of betting to draw conclusions on. Is AQ good now? Do I have the odds to see one more card?
Remember that top pair is a big favorite over 2 overcards. (about 2:1)