Go and Go vs middle pair ?

[TheFoxNL]

2,29 6 max
no reads on villian


PokerStars No-Limit Hold'em Tourney, Big Blind is t50 (6 handed) internettexasholdem.com

UTG (t720)
MP (t5647)
CO (t2070)
Hero (t1995)
SB (t3722)
BB (t2986)

Preflop: Hero is Button with 8[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/spade.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to t150</font>, SB calls t125, <font color="#CC3333">BB raises to t400</font>, Hero calls t250, SB calls t250.

Flop: (t1200) 8[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">BB bets t2586 (All-In)</font>, Hero calls and is all in


after the squeeze play on i put him either on AK trash or a small pair considered AQ but seeing he shoved flop i kinda doubted he had AQ

am i totally off here ??
with what does villian makes these moves Pre and on the Flop