Aq multi way- turn play

[Ciso_B]

I decided to flat on flop to see what he'd do on the turn, when he checks , I felt I had to bet my hand (for value obv), and charge the guy to my left for his perceived draw.
His flat didnt surprise me , cos frankly ppl play bad. But the c/r had me like "woah, where that come from?"...he cant know either of us are going to bet that turn. I mean I have to assume AQ no good right?

PokerStars Game #25968407203: Tournament #145826346, $10+$1 Hold'em No Limit - Level V (75/150) - 2009/03/15 0:37:13 WET [2009/03/14 20:37:13 ET]
Table '145826346 98' 9-max Seat #5 is the button
Seat 1: GRinDer444 (4400 in chips)
Seat 2: allboys_23 (4755 in chips)
Seat 3: Neab (14650 in chips)
Seat 4: wil_e_84 (6370 in chips)
Seat 5: A_Muffel_A (9875 in chips)
Seat 6: Crudda (7415 in chips)
Seat 7: Vtriangle (10700 in chips)
Seat 8: zapper1000 (12660 in chips)
Seat 9: pfcpoker_UK (9435 in chips)
Crudda: posts small blind 75
Vtriangle: posts big blind 150
*** HOLE CARDS ***
Dealt to Neab [Ad Qc]
zapper1000: raises 300 to 450
pfcpoker_UK: calls 450
GRinDer444: folds
allboys_23: folds
Neab: calls 450
wil_e_84: folds
A_Muffel_A: calls 450
Crudda: folds
Vtriangle: folds
*** FLOP *** [9d 4s Qd]
zapper1000: bets 900
pfcpoker_UK: folds
Neab: calls 900
A_Muffel_A: calls 900
*** TURN *** [9d 4s Qd] [5c]
zapper1000: checks
Neab: bets 2400
A_Muffel_A: calls 2400
zapper1000: raises 5100 to 7500
Neab: folds
A_Muffel_A: folds
Uncalled bet (5100) returned to zapper1000
zapper1000 collected 11925 from pot
zapper1000: doesn't show hand
*** SUMMARY ***
Total pot 11925 | Rake 0
Board [9d 4s Qd 5c]
Seat 1: GRinDer444 folded before Flop (didn't bet)
Seat 2: allboys_23 folded before Flop (didn't bet)
Seat 3: Neab folded on the Turn
Seat 4: wil_e_84 folded before Flop (didn't bet)
Seat 5: A_Muffel_A (button) folded on the Turn
Seat 6: Crudda (small blind) folded before Flop
Seat 7: Vtriangle (big blind) folded before Flop
Seat 8: zapper1000 collected (11925)
Seat 9: pfcpoker_UK folded on the Flop

[miaowmiaowchowface]

wp

[Garoen]

You don't see KQ, QJ, or even QT in his range?

[JDRock]

You don't see KQ, QJ, or even QT in his range?

2x BB is not a big raise PF, so I'd expect all of those in his range. However, I might not expect him to lead out on a four way flop with Q and a low kicker. On the other side, I wouldn't expect him to check raise turn on a three way pot unless he had at least 2 pair. Q-9 two pair is not out of the question, and neither of course is a set. However, the size of that raise is either a bluff or a mistake - it doesn't look like a good value bet. My guess, however, is that it was a mistake in making the raise just a bit too large and so unless he's super-aggressive, A-Q is beat.

At this level a check-raise is such an obvious sign of strength.