Does this seem counterintuitive to anyone else?

[Ulysses]

Using twodimes,

Ah3h vs. Qh9h on a 5h4hQd board, Ah3h wins 49.6% of the time

pokenum -h ah 3h - qh 9h -- 5h 4h qd
Holdem Hi: 990 enumerated boards containing Qd 5h 4h
cards win %win lose %lose tie %tie EV
Ah 3h 491 49.60 499 50.40 0 0.00 0.496
Qh 9h 499 50.40 491 49.60 0 0.00 0.504

However, when I add KcKs into the mix, Ah3h wins 50.2% of the time.

pokenum -h ah 3h - qh 9h - kc ks -- 5h 4h qd
Holdem Hi: 903 enumerated boards containing Qd 5h 4h
cards win %win lose %lose tie %tie EV
Ah 3h 453 50.17 450 49.83 0 0.00 0.502
Qh 9h 127 14.06 776 85.94 0 0.00 0.141
Ks Kc 323 35.77 580 64.23 0 0.00 0.358

Is it just me, or does the fact that Ah3h's %win actually increases a little seem counterintuitive?