Well seeing how DOOM and Wolfenstein II run on it, DOOM Eternal will run on it, NBA2K18/19 run on it, etc...
The only thing that does is make them look untalented as developers. Not to mention CoD would sell crazy on the Switch. Guess they do not like money?
I'm playing the devil's advocate here I know, but I don't think COD has any chance of even running on the Switch. And let's face it, most other modern (PS4/XB1) triple-A, realistic graphics games can't either. Sports games are significantly less demanding, so they can run cleanly.
Doom/Wolfenstein are an exception because their engine (ID Tech) is probably the most scaleable engine in the industry (allowing Doom to run on a potato). ID software are outright wizards when it comes to their tech, and are very experienced veterans in game development (though I'm not trying taking any credit away from the Switch itself to be able to rum those games, as you have to remember, that this is a handheld as much as it is a home console).
Bet with Intrinsic:
The Switch will outsell 3DS (based on VGchartz numbers), according to me, while Intrinsic thinks the opposite will hold true. One month avatar control for the loser's avatar.