The temperatures are very moderate in the winter, but the rain is bad. It can, and does, rain for multiple consecutive weeks in the winter. The lack of sun is even worse. It can have a very real effect on mood if you're from somewhere that gets more reasonable amounts of sunlight, which is pretty much anywhere else in Canada.
I lived there for four years and I had a very tough time with the lack of sun. It can be very oppressive. Vancouver has a lot of things going for it (as you mentioned) but I think it's unfair to gloss over the overcast weather.
I moved out to San Francisco during a historic El Nino season so I'm sure my perception is a little warped, but I'd note that you're providing a lot more detail about one than the other, and no citations. Not that any of this matters.
I lived there for four years and I had a very tough time with the lack of sun. It can be very oppressive. Vancouver has a lot of things going for it (as you mentioned) but I think it's unfair to gloss over the overcast weather.