If this were a lower stakes SnG I'd probably call. At the $50 level, we may have to give him more credit, for now. Its too early to tell if he just wants to gamble, which is what you'd be doing if you called. I doubt he has a big pair here with this massive raise, but you're likely in a race situation. I'm just not sure how often you'll see a smaller Ace here. If he has a hand like KQ suited, you're really not far ahead.

Time to be patient. If Imma gonna be all in, it's gonna be on my terms. Too many hands have you beat here, and unless you feel lucky in a race you are probably behind in, ...FOLD!!.

i call

You don't know how he plays and who knows he may have KK, AK, AQ, QQ, AA. Just fold this one and try to read his game. So Fold!

I would fold with AJo and with AJs.

my luck say call

i would fold quickly when one game before the board (dealer) dealt a lot of aces or shows Jacks.
f.e
xJJxx
xxAJx