[Point Blank]

OP ... what hands do you think this guy is playing after 2limpers and a poster?
then raises and caps the flop ...

you have a reason to checkraise the turn??

after you check raise - and he still 3jacks it ... you have any thoughts yet?

so now it's the river. you capped the turn without a thought, now why are you confused at this point the jack didn't change much about his hand (except that his back door draw to a flush draw just got there) ...