It's amazing how deep some will dig to try and make MS appear not that bad. In 2 console gens we got Psyconauts 2, which was already under development, and Hi-Fi Rush, which was already under development, and Age of Empires. Anything else we can add to this list to make it exhaustive guys?
The list of IP they acquired and then left out to dry or bungled is worth its own novella. We can start with Halo. It's astonishing that anyone wants this company to own Nintendo. If you really like Nintendo games you should be scared to death of them becoming Xbox games, the mark of death failure and mediocity for two solid generations. Instead of correcting their own managerial failures, Xbox just wants to buy the competition to add to their collection of studios which they are free to manage poorly. Maybe you would like to see them direct Rare to make, like, one Nintendo style IP first. They aren't in this to make great games.
Edit: I think it's obvious that most people who want this to happen, probably don't even have a current Nintendo system and have nothing but something to gain from it. Even if it's nothing but Nintendo's back catalog on Xbox and a single half-Mario game before the wheels fly off and it becomes a husk of its past self, that's more than they have now. Actual Nintendo fans have a lot to lose, a steady stream of quality games which come from a completely different dev philosophy than what happens at MS.