Poor etiquette? Hand announcement.

[RocketManJames]

So the board reads: AK976

A guy bets, and he is called. The bettor announces, "AQ."
A second or two passes, and the bettor turns over 76 for bottom two pair. The caller seems disgusted since he has been lied to... the bettor then says, "It's the same thing. If you can beat AQ you can beat my hand."

I tend to agree with the bettor, but I am curious what you all thought. I don't see a problem with the bettor's hand announcement, since it was effectively the same. It surely wasn't any sort of angle shoot, since he announced a hand weaker than he really had.

-RMJ