All-in preflop with AK?

Here's the situation:
Blinds 75/150, $25 multi table tournament with a pool of 159 (starting at 1500 chips).
hero's stack: 2300
villain's stack: 3700
hero is dealt AK
villain (UTG) calls 150
hero (UTG+1) raises all-in
folds all around back to villain...

Hero in this situation is my friend, and afterward we get into an argument on what the right move is. He says the table was loose and the villain was very loose and weak, hero even hoped for a call from him. He also says he built up a tight image. My friend says AK is an autopush when the blinds are big enough, table is loose enough, and he has a tight image.

Did he make the right move and is he right about AK?