Who did more damage to Xbox's console business: Don Mattrick or Phil Spencer?

[RolStoppable]

Easily Phil Spencer. After all, he was there all along with Don Mattrick to conceive the Xbox One blunder. Mattrick had to take the blame and got fired, but it was always a bit weird that some other higher-up from this team of leadership took over and was supposed to represent a humbled Xbox team that had a better understanding of what gamers want.