*Grunch*
[disclaimer] Before I get into it, let me qualify this by saying, I don't understand the rating number you put forward yet. I am saving that study for later on when I have a better understanding of Poker Tracker, and have my personal leaks plugged.[disclaimer off]

Maybe in retrospect you see you had the best hand, but it was NOT the nut flush -- you don't know where the A [img]/images/graemlins/spade.gif[/img] is, and BB is loose, what if he called with 5[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/spade.gif[/img]? Hell, what if he called you with 34o?? None of these cases are very likely, but you should consider them. Especially A [img]/images/graemlins/spade.gif[/img].
Personally, I would bet 1/2 of the pot and see what came back at me and make my final decision then. I would probably call most anything short of an all-in raise, since your hand is nearly, but not quite, invincible.