$33 Bubble: Wow, -EV to call with AKo vs bigstack pushing with any 2?

[AA suited]

Party Poker No-Limit Hold'em Tourney, Big Blind is t150 (4 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

SB (t580)[/b]
<font color="#C00000">HERO (t1220)</font>
UTG (t1055)
<font color="#C00000">Button (t5145)</font>

Preflop: HERO is BB with A[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/spade.gif[/img].
Button goes all-in, Hero ???

Big stack has been pushing EVERY hand when folded to him since we entered the bubble.

I put him on any 2.

Surprisingly, it's -EV to call even if i put him on 72o.