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I just think its very very standard to shove 15bbs over a hijack open with a wide range vs a random player. And with AQ. WOW if you are thinking of folding.
I played a leg of the Sky tour last year, in one hand the button shoved about 10bb"s and the big blind folded AK (!) face up (!!) leaving herself with a 7bb stack (!!!)
there are a lot of things that are "standard" but there are a
lot of players who have very strange ideas about how many chips they need before they think they are short stacked, plus some people have got so hung up on the idea about needing fold equity that they forget that your total equity is also based on the strength of your hand (i.e. if your cards are strong enough then it doesn"t matter if you have zero fold equity).
Just goes to show that you really need some idea about your specific opponent/s, if they"re only playing AK,AA,KK then AQ is junk - but if you"re likely to get at least a coinflip then with stack sizes that low you"d be mad to miss the chance of a double up.