Consistent tactic

I have been using my recently using my created 4-3-3 and have found that in the 5 games I have tried it, I have had 5 3-1 results. A bit too suspicious?
[imgw]http://i50.tinypic.com/j9ukg8.png[/imgw]

Really suspicious. If it's only happen 2 or three times, i can it's a coincidence. But, 5 times.. MAybe a bug..