$40-$80 KK hand (Borgata)

[UMTerp]

Fairly loose $40-$80 game this weekend at the Borgata. Lots of multiway pots. I raise UTG with K[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/club.gif[/img], MP1 calls (calling station preflop, average at best postflop), MP3 calls (pretty laggy, but possibly the best player at the table – tricky aggressive), BB calls (way too loose preflop, so-so postflop, probably called too much).

Flop 9[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/spade.gif[/img]. BB checks, I bet, MP1 raises, everyone calls.

Turn 4[img]/images/graemlins/heart.gif[/img]. BB checks, I check, MP1 bets, MP3 calls, BB calls, I check-raise.

Is this line way worse than 3-betting the flop and leading the turn? Why?