Weird hand v choppy stars 1k

[MaverickUSC]

Poker Stars, $1,000 + $50 NL Hold'em Tournament, 10/20 Blinds, 9 Players
LeggoPoker.com - Hand History Converter

BTN: 3,380
SB: 3,265
BB: 2,829
UTG: 2,700
UTG+1: 2,970
UTG+2: 2,840
MP1: 2,750
MP2: 3,220
Hero (CO): 2,986

Pre-Flop: (30) 8[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/heart.gif[/img] dealt to Hero (CO)
UTG folds, UTG+1 calls 20, 2 folds, MP2 calls 20, Hero calls 20, BTN folds, SB calls 10, BB checks

Flop: (100) 5[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/heart.gif[/img] (5 Players)
SB checks, BB checks, UTG+1 checks, MP2 checks, <font color="red">Hero bets 69</font>, 3 folds, <font color="red">MP2 raises to 220</font>, Hero calls 151

Turn: (540) Q[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">MP2 bets 420</font>, Hero calls 420

River: (1,380) Q[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">MP2 bets 820</font>, Hero folds

Results: 1,380 Pot
MP2 mucked and WON 1,380 (+720 NET)

I really didn't give him credit and thought he'd give up on the river vs. me as most likely an unknown to him.

Thoughts?