This debate is pointless and we absolutely can compare Switch and PS2 sales.
If the Switch surpass the 162m mark it's going to be the best selling console ever and no amount of mental gymnastics can change that.
And that is all this is about, no? The Switch becoming the best selling console ever with no distinctions between handhelds or home consoles.
I swear, this is the first time I've seen anyone making this distinction, but seeing who made this thread... yeah. It all makes sense lol.