Repeating losing hand - AQ

[Atg Dax]

100$ MTT, 27 players left avarage stack 4500, blinds 200-100
this is a problem hand / situation I get into many times at this stage of the tournament.


PokerStars No-Limit Hold'em Tourney, Big Blind is t200 (7 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

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

<font color="#C00000">AQ-Hero (t2750)</font>
MP1 (t2065)
MP2 (t3845)
CO (t2235)
Button (t14108)
SB (t1560)
<font color="#C00000">BB (t1915)</font>

Preflop: AQ-Hero is UTG with A[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">AQ-Hero raises to t2750</font>, <font color="#666666">5 folds</font>, BB calls t1715 (All-In).

Flop: (t4765) 8[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

Turn: (t4765) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

River: (t4765) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

Final Pot: t3930
{He called with 99}

Another hand in same stage of the tournament:
Im in the BB (200) all fold to the button who raises 400 more, SB folds, I have AQo. My stack is 3600 his is 2700.
Whats the right play here ? assuming i just played 10 hands there so no info on the BTN player.