Your logic is impeccable!
However, mathematically speaking, the winning of the pirates is merely almost certain - even if it has a probability of one, seeing as we have no direct evidence of the intergalactic win.
Therefore I take the stance of the dart board, in that there is a probability of one that any point on the dart board will not be hit, because a point has no area. Therefore it is almost certain that the dart will not hit any one point.
However, the system must exist in a state, and therefore one point WILL be hit. Therefore, ninjas are the darts that defy probability - especially when their chances are zero per cent. They automatically win, regardless.
Nice try though 