Ure being diseingenius. Helsinki is 650k, but actually it's a tri-city with Espoo and Vantaa, going over 1M population. That's more than SF in a similar area.
I've been to Helsinki, it's a lovely place, but calling it a big city is misleading at best.
It's all relative, I suppose.
Helsinki alone is almost twice the area of SF, Vantaa is more than twice SF’s area, and Espoo is closer to three times SF’s area, so, yes, that tri-city is more people than SF, but, no, it's not “in a similar area”.