2016
Europe population ~730m
Japan population ~120m with one of the fastest declining populations in the world
Of course more hardware and software sells in Europe.
But none of that really matters. The real reason I tend to disregard Japanese sales numbers isn't because more or less consoles sell there, but because of console type cultural differences. Despite loving Japan and much of its culture, the fact is Japan focuses much more heavily on mobile/handheld gaming and I don't like it at all anymore.