Flop raise in 3bet pot - all the monies?

[BorisTheSpider]

Villain is 49/38 with 13% 3bet over 80 hands. I've only seen him get 3bet once before, and he 4bet. He has opened 74% of cutoffs so far.

Postflop, he doesn't seem spewy so far. His AF is 1.8 and out of 5 times I've seen him face a cbet, he's only raised once. He's called 3 times, and folded once.

We're so deep here, and he can have all the sets, so I folded, but I wonder if this is really bad in a 3bet pot?

Even if he's crazy enough to be raising all his overpairs as well as sets (which his stats don't really suggest he is), I'm a slight dog, he has to be raising all his overpairs and sets and at least 8 bluff combos for me to be slightly ahead.

Poker Stars, $0.10/$0.25 No Limit Hold'em Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.

Hero (BTN): $60.57 (242.3 bb)
SB: $43.11 (172.4 bb)
BB: $32.60 (130.4 bb)
UTG: $26.01 (104 bb)
MP: $18.85 (75.4 bb)
CO: $102.59 (410.4 bb)

Preflop: Hero is BTN with K K
UTG folds, MP raises to $0.50, CO calls $0.50, Hero raises to $2.75, 3 folds, CO calls $2.25

Flop: ($6.35) 6 T 9 (2 players)
CO checks, Hero bets $3.75, CO raises to $9.70

[griffey24]

Not loving this spot at all, but I would call and see a turn.

[OngBonga]

I think you can throw in QJ to his range too, he's pretty loose pre and certainly has it pre flop. How he reacts to a cbet on this flop with QJ is anybody's guess, but since we have two blockers to his draw, plus he can hit top pair and pay us off, plus if the board pairs on the turn he's down to 4 outs and can be coolered, I think we can certainly peel flop at least and see if he fires again. I prefer folding to raising flop though, simply because we're so deep.

[The Bean Counter]

Weird play from villain given the flop, but I ditch it as well. I'm not happy to call turn and river jams on any run-out and our equity is terrible on the flop unless villain is bat-shit insane.