Qustionable Cowboys fold on the Flop?

[KDawgCometh]

Party Poker 0.5/1 Hold'em (10 handed) converter

Preflop: Hero is Button with K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">1 fold</font>, <font color="#CC3333">MP1 raises</font>, MP2 calls, MP3 calls, CO calls, <font color="#CC3333">Hero 3-bets</font>, SB calls, <font color="#666666">1 fold</font>, UTG+1 folds, <font color="#CC3333">MP1 caps</font>, MP2 calls, MP3 calls, CO calls, Hero calls, SB calls.

Flop: (26 SB) 2[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(6 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">MP1 raises</font>, <font color="#CC3333">MP2 3-bets</font>, MP3 folds, CO folds, Hero folds, SB calls, MP1 calls.

Turn: (17.50 BB) J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">MP1 bets</font>, <font color="#CC3333">MP2 raises</font>, SB calls, MP1 folds.

River: (22.50 BB) 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">MP2 bets</font>, SB calls.

Final Pot: 24.50 BB

Reads, both raisers are loose, but the cap worries me. On the flop I was planning on 3-betting to see if Aces or a set of Queens were out there, but the bettors don't neccessarily have to those hand, AK, AQ or KQ could very well be likely in this situation too, I don't feel that there is the bottom set either, but a set of Jacks too could be likely or even someone over playing nines or tens