top set vs straight vs gutshot+NFD 3 way ai on flop equity Q

[mephisto]

Full Tilt Poker Game #3578220759: Table Eginton (6 max) - $200/$400 - Pot Limit Omaha Hi - 4:19:40 ET - 2007/09/16
Seat 1: fish4rice ($7,400)
Seat 2: sbrugby ($83,977)
Seat 3: Daduv4 ($96,004.50), is sitting out
Seat 4: Ziigmund ($87,594)
Seat 5: David Benyamine ($28,774)
Seat 6: Thomas Wahlroos ($30,564)
Ziigmund posts the small blind of $200
David Benyamine posts the big blind of $400
The button is in seat #2
*** HOLE CARDS ***
Thomas Wahlroos raises to $1,400
fish4rice folds
fish4rice stands up
sbrugby folds
Ziigmund calls $1,200
David Benyamine raises to $5,600
Thomas Wahlroos raises to $16,400
Ziigmund has 15 seconds left to act
Ziigmund has requested TIME
Ziigmund calls $15,000
David Benyamine calls $10,800
*** FLOP *** [9c Jd Kd]
Ziigmund checks
David Benyamine bets $12,374, and is all in
Thomas Wahlroos raises to $14,164, and is all in
Ziigmund calls $14,164
Thomas Wahlroos shows [7d Ts Ad As]
Ziigmund shows [Th 9s Qc 7s]
David Benyamine shows [Kh 3d 3c Kc]


Okay, so I ran the equity %'s at twodimes.net and this is what it came out with:

pokenum -o kh 3d 3c kc - th 9s qc 7s - ad as 7d ts -- 9c jd kd
Omaha Hi: 666 enumerated boards containing 9c Kd Jd
cards win %win lose %lose tie %tie EV
Kc 3c 3d Kh 254 38.14 412 61.86 0 0.00 0.381
9s 7s Qc Th 186 27.93 476 71.47 4 0.60 0.282
As Ts Ad 7d 222 33.33 440 66.07 4 0.60 0.336

As a omaha newb, can someone please explain to me how top set has more equity than the made straight on this board? I can at least see where thomas' equity is coming from but not Benyamine's (as slight favorite).

In NLHE top set vs made straight the equity is quite different:

pokenum -h kh kc - th qc -- 9c jd kd
Holdem Hi: 990 enumerated boards containing 9c Kd Jd
cards win %win lose %lose tie %tie EV
Kc Kh 341 34.44 640 64.65 9 0.91 0.349
Qc Th 640 64.65 341 34.44 9 0.91 0.651