Luck or mad skill

Seat 1: gmoneyxxx12 ($99 in chips)
Seat 6: !luck [4D,AD] ($117.75 in chips)
ANTES/BLINDS
!luck posts blind ($0.50), gmoneyxxx12 posts blind ($1).

PRE-FLOP
!luck calls $0.50, gmoneyxxx12 bets $4, !luck calls $4.

FLOP [board cards 5S,3C,QS ]
gmoneyxxx12 bets $5, !luck bets $13, gmoneyxxx12 calls $8.

TURN [board cards 5S,3C,QS,4S ]
gmoneyxxx12 checks, !luck bets $25, gmoneyxxx12 calls $25.

RIVER [board cards 5S,3C,QS,4S,KC ]
gmoneyxxx12 checks, !luck bets $40, gmoneyxxx12 folds.

SHOWDOWN
!luck wins $125.
SUMMARY
Dealer: !luck
Pot: $126, (including rake: $1)
gmoneyxxx12, loses $43
!luck, bets $83, collects $125, net $42

I had a little bit of info on the guy he seemed a pit impatient at times. Though i never played with him heads up. He very relecuntly called the reraise and very slowly called the 25. Comments are apprecaited.

Lucky that he didn't hit his overcards or another spade on the river b/c he would have called.

Skill b/c you ran a good bluff w/ bottom pair and flush on board when he showed weakness when the flush card hit.