Hero doesn't go to war. KT vs donk bet

[AceofSpades]

Full Tilt Poker, NL Hold'em Tournament, 1,200/2,400 Blinds, 300 Ante, 8 Players
LeggoPoker.com - Hand History Converter

UTG+1: 67,717
MP1: 54,090
Hero (MP2): 57,522
CO: 23,889
BTN: 33,809
SB: 217,049
BB: 115,534
UTG: 24,140

Pre-Flop: (6,000) T[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/club.gif[/img] dealt to Hero (MP2)
3 folds, <font color="red">Hero raises to 7,200</font>, 3 folds, BB calls 4,800

Flop: (18,000) 5[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">BB bets 4,800</font>, Hero folds

Results: 18,000 Pot
BB mucked and WON 18,000 (+10,500 NET)

feels weak...I go to war here sometimes, but lately have been trying to stop spewing chips...good/bad?