[levAA]

[ QUOTE ]
he is LAG, but I was scared about his 4bet
if he had AJ+ I think he was just calling

I put he with a pair... I was almost sure that
but I pushed and he showed JJ

I won, but I don't know if is good to play a flip here... against other big stack
to play small pots PF isn't better? only playing big pots when I'm ahead

[/ QUOTE ]

So you did everything right.

If you play in position you can flat-call with AK and play postflop (while most of the time it's still better to 3-bet). In the SB your way was the better one.

In a big MTT you will have to crush more than one big stack to reach the FT, so don't be too afraid of busting out (which you will do often).