You would be shocked how little difference there actually is between most alternate universes.

Oh, granted, theres always going to be the odd one out. Well actually, there are an infinite number of odd ones out. You see, the nature of the multiverse is that its not actually multi so much as omni. Everything that could have possibly happened has happened, and more than that, it has happened an infinite number of times across an infinite number of universes. Therefore it is impossible for any universe to truly be odd, because any given universe is nothing more or less than the sum total of an infinite number of things happening or not happening in combination, and there will be another universe where the exact opposite things happened, and between them will be universes with all of those (again, infinite) things happening in wildly different or nearly identical combinations. And each of those will have an opposite too.

-Moczo, Chaos Theory