I've got no sense for China. I'm still waiting to find out more about how China will receive an actual console. It could be almost nothing, or it could be a huge ton. My biggest skepticism about China has to do with supply though. Nintendo is about to have trouble supplying the places where it is well established. I am not sure how they can supply China at the same time. It might just make Nintendo even more short supplied.
In the end, I still think Switch total sales will surpass PS2 even before China is taken into account. After adding in China who knows? It might be a drop in the bucket or it might double their total sales. I need to see how Nintendo is received there before I can decide.
I can't imagine the Switch beating the PS2 with no new 3rd party games from 2021 ported anymore. The Switch would need to sell well until 2026 to reach 150M.
You should have given a vote anyway...The middle of the Gaussian curve obtained with many votes should give a realistic estimation.
Current PB on Secret of Mana remake : 2h27 (2nd)
Strongest worldwide achievement on TGM : 1st European S13 rank
Fastest TGM3 MASTER in Europe : rank Master V in 5min10
Western record on TGM3 EASY : 1484
Current PB on Power Ranger (Game Gear) : 10min06 (World Record)
Non-geek activity : ThermalHungary