Re: We win, because anything less would not be maximally wonderful.

Um, it depends. If we have AI, and they have AI and they have chosen a utility function closer to that which would be favoured by natural selection under such circumstances - then we might well lose.

Is spending the hundred million years gearing up for alien contact - to avoid being obliterated by it - "maximally wonderful"? Probably not for any humans involved. If the preparations are at all serious, ditching the crummy, evolved, backwards human phenotype, and replacing it with a more universe-worthy solution, is likely to be somewhere around step 1.