[GoSox]

Short handed you're playing so many hands with so few people that you need to vary your play and there is much less often a "correct" answer. Often in this situation if I'm first to act I will make a bet to show some strength because it often keeps someone else from trying to bet me out of the pot, such as this instance.

However, in this case with AA and a possible flush and straight draw on the board he probably would have allin'd anyhow.