There's a difference. Of the 2.3 million Wii U owners, most of them likely didn't play anymore. I know Xenoblade Chronicles X got me to take out my Wii U for the first time since Earthbound. But for me in particular, I am a gigantic fan of the Xeno franchise and Takahashi's work.
Switch is currently red hot. So the active purchasing base is likely much higher.
I describe myself as a little dose of toxic masculinity.