Ha, well we had the same design in the UK as Japan. So did everywhere else, apart from the USA.
A relative bought back a Japanese Super Famicom after being there for a bit along with a shedload of games. We had a UK power supply for it (worked with my UK mega drive AC adapter) and it worked with our UK 20" Sony CRT (pal, but supported NTSC). We used an RGB scart cable, so I was living the dream of full speed 60hz RGB in the UK back in the 90s. Dreamland