Why not?
(A + B) - 2 = X
To assert X = 4
OR
To assert X =/= 4 are equally as unjustifiable to me.
While X could literally be an infinite amount of numbers other than 4, (and yes, that would, by the laws of probability lead to the absolute conclusion that x =/= 4.) we can tell that doesn't work, since X could be 4.
This is because probability does not account for variable in an infinite set, but, you are looking for a specific number other than 4 in this case. By the laws of probability, that is also certainly not the case. (Yes, I know that's not mathematically so sound, but think of the concept here, not the mathematics.

)
Until we have some evidence that would directly contradict the existence of a God-Like being, I would say it is absurd to claim it does not exist, for a fact.
They are both equally unjustifiable, because they are both TOTALLY unjustifiable.