Villain is 0/0 over 4 hands.

Played passively pre and flop, to get max value from worse aces. Think I should have raised turn though.
River seemed like a hard decision at the time, but it turns out I have 32.5% equity against [KK, 44, A9s+, ATo+], which is exactly what I need. I don't see him having any flushes (A, K, and J are gone) or QT. Considering that 44 should probably discounted somewhat and that he sometimes has worse aces or even KQ or KJ if he's bad and thinks I don't have the A, it looks like a clear call.

Poker Stars No-Limit Hold'em, $0.05 BB (8 handed) - Poker Stars Converter Tool from http://www.flopturnriver.com

saw flop | saw showdown

UTG ($2.35)
UTG+1 ($5.07)
MP1 ($5.72)
MP2 ($5)
CO ($5.62)
Hero (Button) ($9.40)
SB ($3.14)
BB ($12.57)

Preflop: Hero is Button with Q, A
3 folds, MP2 bets $0.20, 1 fold, Hero calls $0.20, 2 folds

Flop: ($0.47) 4, A, K (2 players)
MP2 bets $0.30, Hero calls $0.30

Turn: ($1.07) A (2 players)
MP2 bets $0.60, Hero calls $0.60

River: ($2.27) J (2 players)
MP2 bets $2.20, Hero?