Probably about the same amount as Steam. There’s a lot of garbage on there too. It’s the nature of a widely accessible platform.
What’s probably more interesting about this comparison is how much console gaming has changed in recent years. It wasn’t too long ago that console game development had such high barriers to entry that it was damn near impossible to make a game outside one of the big studios. So much of the stuff on consoles now, including the trash, never would have seen the light of day before.