Any merit to calling big raise pre-flop w/ AA? 5-5 NLHE

[Ulysses]

5-5 NLHE. I have 2000+ and cover everyone involved in this hand.

Opener for 20. Two or three callers, one of whom (in CO) is a very strong player. I'm in the SB w/ two black Aces. I make it something like 120 to go. I'm capable of making a good sized raise here w/ a relatively wide range of hands and the better players are aware of this.

Tricky (but loose and not terribly solid), aware, aggressive player in BB (1200ish) ponders a few seconds and raises me about 500 more. If he puts me on a steal, he doesn't need much of a hand to do thi. He now has bet about half his stack. Folded back to me.

I pushed. Should I have considered calling? If so, why?