I don't know a single person except me and my best friend who even own an xbox and even less who want one, I know at least 6 people who own a switch and more who want one.
Switch games will sell much much better and a lot of the xbox one audience that might have concidered it will have also had a chance to buy it on PS4 and there are a ton of multi-console owners.
On the other hand people who own a PS4 and a Switch will have the "portable" sales pitch and might even concider double dipping.
Switch vote is a no brainer. I think it would have been more interesting to ask if it would sell more on switch or steam.