Hard to know if successful without knowing how much stock went to each country.
Looking at this;
http://www.gamesindustry.biz/articles/2017-03-03-analysts-cant-agree-on-switch-potential
Estimates for this year seem to be between 4.4-10 million and it states early signs look positive.
I would think 4.4 million would be pretty much the Nintendo fanbase only.
UK seems to either have an oversupply of stock or demand below stock level to some degree.
Amazon bestsellers have the Switch as teh best selling console but it is out of stock now.
https://www.amazon.co.uk/Best-Sellers-PC-Video-Games-Consoles/zgbs/videogames/676171011/ref=zg_bs_nav_vg_h__1_vg_h_
Instinctively I feel like it has underperformed in the uk a bit but hopefully not.
Just watching youtube and so sick of Nintendo Switch adverts now coming between every video. Alternating between Zelda and the Switch advert itself.
