Right Call?

[Fortune 500]

Down to heads up, and dead even. I went into heads up down to about 1k, and managed to scratch my way back. Opponent is crazy tight, and had generally been folding to my raises unless he had a real hand, in which he'd been coming over top of me. Had been a long heads up session (probably 25 hands in, so I had a good feel for him. ) My read is that I'm ahead here. Opponent would have reraised me preflop with a monster (unless he changed pace on me drastically) and I think he value bets a hand he's confident in, as I'd folded after a PFR to post Flop Aggression enough times for it to be established pattern.

My read is that my Ace is good here, and MAYBE even dominating. Or he's taken a gamble and gotten a peice of that draw, which seems highly unlikely.

Do I make the call?

Seat 4 - FORTUNE500 ($6780 in chips)
Seat 9 - SNOWWOLF ($6720 in chips)
FORTUNE500 - Posts small blind $200
SNOWWOLF - Posts big blind $400
*** POCKET CARDS ***
Dealt to FORTUNE500 [Ad Qc]
FORTUNE500 - Raises $1000 to $1200
SNOWWOLF - Calls $800
*** FLOP *** [8s 6h 4h]
SNOWWOLF - All-In $5520
FORTUNE500 - ???

[gabe]

if hes crazy tight, then fold. usually tight players dont get out of line.

[Fortune 500]

Crazy tight in a heads up sense... meaning, I'm probably not getting called without two face cards or a medium ace. Not crazy tight as in he'll only go at me with a PP or Big Ace.

[zarry]

lay it down not worth it on high cards specially when u say how hes been playin

[pgil]

just posted a very similar thread to this one. during the rest of the tourney did he ever bluff/semibluff post flop?? if not, easy fold. If yes, still a tough call. I think this push means one of two things, either a PP that doesnt think you hit that flop, or he has finally started to play back at you. if you can figure out which one it is, it makes the decision a lot easier.

[Fortune 500]

He'd semibluffed a few times.

I still trusted my read.

I called. My AQ>A5.