Just off the top of my head, Switch is going to have at least one big, non-Wii U game per month that it is out this year.
1-2-Switch
Snipperclips
Super Bomberman R
ARMS
Splatoon 2
Mario + Rabbids
Xenoblad Chronicles 2
Super Mario Odyssey
Fire Emblem Warriors
Rocket League
Stardew Valley
NBA 2K18
FIFA 18
Then on top of that, consider that Breath of the Wild was a simultaneous release and will probably by game of the year for a lot of people. Consider also, that Mario Kart 8 and Pokken have significant content additions. Consider, a third time, that that any game ported gains the ability to be played portably.
Switch is already having one of the strongest launch years in recent memory in terms of games. Stuff like Bayonetta helps, not hurts.