Smooth calling with AA in late position

[parttimepro]

Happened tonight. Anybody play it differently? What if button had started with $200?

Ultimate Bet No-Limit Hold'em, $2 BB (9 handed) converter

UTG+1 ($162)
MP1 ($210)
MP2 ($187.85)
MP3 ($66)
CO ($21.55)
Button ($100.60)
Hero ($208.65)
BB ($95)
UTG ($77.70)

Preflop: Hero is SB with A[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">MP2 raises to $9</font>, MP3 calls $9, <font color="#666666">1 fold</font>, <font color="#CC3333">Button raises to $31</font>, Hero calls $30, <font color="#666666">2 folds</font>, MP2 folds, MP3 calls $22.

Flop: ($104) 9[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, MP3 checks, <font color="#CC3333">Button bets $69.6 (All-In)</font>, Hero calls $69.60, MP3 calls $35 (All-In).