One key difference that jumps out at me between various cities in Japan and Vancouver is that the COL seems significantly better in Japan. When I visited Vancouver I couldn't afford to stay in or even near the city, I had to find a place about 20 minutes away and even then it was pricey. Whereas in Japan I had no problem finding affordable stays in city centers in all of the major cities I visited, including Tokyo.

I will admit my ignorance here however and acknowledge there are likely myriad other variables at play here that I'm not considering.