AKo big multiway pot

[aajiii]

BB: 19/9,72/2,29 (144 hands)
UTG+2: 21/9/3 (67 hands)

Party Poker 0.50/1 Hold'em (10 handed)

Preflop: Hero is MP3 with A[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#CC3333">UTG+2 raises</font>, <font color="#666666">1 fold</font>, MP2 calls, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">2 folds</font>, SB calls, BB calls, UTG+1 folds, <font color="#CC3333">UTG+2 caps</font>, MP2 calls, Hero calls, SB calls, BB calls.

Flop: (21 SB) Q[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, BB checks, UTG+2 checks, MP2 checks, <font color="#CC3333">Hero bets</font>, SB calls, <font color="#CC3333">BB raises</font>, UTG+2 calls, MP2 folds, <font color="#CC3333">Hero 3-bets</font>, SB folds, <font color="#CC3333">BB caps</font>, UTG+2 calls, Hero calls.

Turn: (17 BB) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">BB bets</font>, UTG+2 calls, Hero calls.

River: (20 BB) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">BB bets</font>, UTG+2 folds, Hero calls.

Final Pot: 22 BB

What do you think? I was pretty sure that I was behind when BB capped the flop. I was thinking about something like KQs. But can you lay down TPTK in this kind of pot?