pumping the pot with an overpair

[jt1]

This is from a recent post:

Party Poker 5/10 Hold'em (6 max, 6 handed) converter

Preflop: Hero is BB with Q[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
UTG calls, MP raises, 1 fold, Button calls, 1 fold, Hero 3-bets, UTG calls, MP caps, Button calls, Hero calls, UTG calls.

Flop: (16.40 SB) 3[img]/images/graemlins/spade.gif[/img],4[img]/images/graemlins/heart.gif[/img] ,5[img]/images/graemlins/diamond.gif[/img] (4 players)
Hero checks, UTG bets, MP raises, Button calls, Hero 3-bets, UTG calls, MP caps, Button calls, Hero calls, UTG calls.

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Say that UTG and MP are both tight passive. Hero estimates there is a 75% chance that he is behind and 25% chance that he is ahead. Should he 3 bet?

Though there are 3 others in the pot and he has a 25% chance that he is currently ahead, you have to consider that he will get drawn out on more often then he will draw out. In other wrods his chances of winning aren't 25%. Should he still 3-bet?


Now change the scenario slightly and say that UTG is an unknown and MP is tight passive. Should he 3-bet?

What if MP is the unknown and UTG is tight passive?

Anyone care to take a shot? For what it is worth, I think that 3-betting if either UTG or MP are unknown is correct but if both are tight passive then I think Hero should just call.