Big draw has showdown value?

[sharpie]

Commerce 20/40. Villain has been reading a magazine and playing mostly TAG PF, mediocre postflop. One hand of note he posted in the CO, called a raise with 32 offsuit I believe, raise a QJ2 flop 3 way, raised a 3 turn HU on the turn and bet a Q river when he got counterfeit. Other than that he's been fairly tight.

I raise K[img]/images/graemlins/spade.gif[/img]Q[img]/images/graemlins/spade.gif[/img] EP, he calls in the BB.

Flop J[img]/images/graemlins/diamond.gif[/img]9[img]/images/graemlins/spade.gif[/img]7[img]/images/graemlins/spade.gif[/img]

I bet, he calls

Turn 6[img]/images/graemlins/diamond.gif[/img]

I bet, he check/raises, I call

River A[img]/images/graemlins/club.gif[/img]

He bets, I raise.

What about 2[img]/images/graemlins/club.gif[/img] on the river?