The 3DS cleared just barely cleared above 15 million with an extra month of Japan according to this site's data ...
I'll grant you point one but point two is where logic sort of goes off rails ...
Depending on how you define "reasonable" in this context it could very well be that or if we were talking in "relative" terms, the compute power to price value proposition isn't exactly what I'd describe as competetive since the Switch only offers a fraction of what PS4/X1 slim delivers at the same price!
Arguing in terms of price is not what I'd advertise since the Switch does not have an advantage there and arguing from the point of perf/$ is not a great idea either when the competition out there does that better. What you probably wanted to argue was that the switch offers balance between maximizing power/portability ...
Power is also not the most important factor when people are deciding to buy the system, it's content and offering a platform with just a perf/$ advantage get's you nowhere when we take a look at the original Xbox, Gamecube (had a perf advantage and launched at same price as PS2 was at the time but failed) and N64 (the same thing happened only this time with PS1) ...
Point 3 is whatever since hardware branding doesn't matter much with Nintendo compared their competitors ...
