[fouronefive]

I'd think you either need to 4bet or fold - if you call here, do you really want to play AJo (even with position) - on a dry flop? Have does villain play postflop?

I can play devil's advocate here - if you 4bet, do you really want to call a possible push with AJo? Maybe, but overall i'd say you can pick a better spot against a 36/33 than AJo...