[Superfly]

Take a look at this hand. How can the nuts guy call this to the river if he doesn't know what's com? It's one of the worst plays I've ever seen.

PokerStars Game #19070749814: Tournament #96579901, $100+$9 Omaha Hi/Lo Pot Limit - Level IV (50/100) - 2008/07/24 - 16:15:47 (ET)
Table '96579901 2' 9-max Seat #7 is the button
Seat 1: SmoothDog5 (2947 in chips)
Seat 3: Exit4afilm2 (1742 in chips)
Seat 4: georges747 (1225 in chips)
Seat 5: PlayWMyNuts (4553 in chips)
Seat 6: undeeno (3002 in chips)
Seat 7: Consagres (2318 in chips)
Seat 8: Slavik_Krs (2000 in chips)
Seat 9: JJ stone-x (2205 in chips)
Slavik_Krs: posts small blind 50
JJ stone-x: posts big blind 100
*** HOLE CARDS ***
Dealt to SmoothDog5 [7s 5d 3h 2c]
SmoothDog5: calls 100
Exit4afilm2: folds
georges747: folds
PlayWMyNuts: calls 100
undeeno: folds
Consagres: folds
Slavik_Krs: calls 50
JJ stone-x: checks
*** FLOP *** [4d 5s Ah]
Slavik_Krs: checks
JJ stone-x: checks
SmoothDog5: bets 100
PlayWMyNuts: calls 100
Slavik_Krs: folds
JJ stone-x: calls 100
*** TURN *** [4d 5s Ah] [Kd]
JJ stone-x: checks
SmoothDog5: bets 300
PlayWMyNuts: calls 300
JJ stone-x: folds
*** RIVER *** [4d 5s Ah Kd] [2h]
SmoothDog5: checks
PlayWMyNuts: bets 700
SmoothDog5: calls 700
*** SHOW DOWN ***
PlayWMyNuts: shows [Kc 9s As 3c] (HI: a straight, Ace to Five; LO: 5,4,3,2,A)
SmoothDog5: shows [7s 5d 3h 2c] (HI: a straight, Ace to Five; LO: 5,4,3,2,A)
SmoothDog5 collected 675 from pot
PlayWMyNuts collected 675 from pot
SmoothDog5 collected 675 from pot
PlayWMyNuts collected 675 from pot
*** SUMMARY ***
Total pot 2700 | Rake 0
Board [4d 5s Ah Kd 2h]
Seat 1: SmoothDog5 showed [7s 5d 3h 2c] and won (1350) with HI: a straight, Ace to Five; LO: 5,4,3,2,A
Seat 3: Exit4afilm2 folded before Flop (didn't bet)
Seat 4: georges747 folded before Flop (didn't bet)
Seat 5: PlayWMyNuts showed [Kc 9s As 3c] and won (1350) with HI: a straight, Ace to Five; LO: 5,4,3,2,A
Seat 6: undeeno folded before Flop (didn't bet)
Seat 7: Consagres (button) folded before Flop (didn't bet)
Seat 8: Slavik_Krs (small blind) folded on the Flop
Seat 9: JJ stone-x (big blind) folded on the Turn