Justified loose call?

[MrStretchie]

Hero is in the BB with Q[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/diamond.gif[/img]

MP2 seems to be a decent, somewhat LAGgy player. MP3 is the perfect maniac preflop. In 20 hands so far, he's raised preflop every time, regardless of action. Twice MP2 openraised and he 3-bet, but I didn't get to see MP2's holdings because MP3 caught some crazy stuff (straight w/ 64o, 2 pair). Button is loose, passive.

Postflop MP2 stays decent and a big LAG, MP3 goes passive, Button stays passive.

SO MP2 openraises, MP3 3-bets, Button cold calls 3, I call 2 cold...

Too loose, or justified? I know I have a huge equity edge over MP3 and likely button as well. I'm probably behind to MP2. Seems like there's enough overlay here to go for it anyway though, no?

[Jake (The Snake)]

It's probably fine given descriptions.