I grew up in SF, but I've spent a lot of time living in SoCal as well. I can't stand the kneejerk anti-socal mentality you sometimes find up north either (1). It seems to mainly be a mentality of northerners (though when I lived in LA, the LATimes did take the occasional potshot at the "boutique empire of san francisco", some of which were kind of amusing). The whole thing seems to be fading, though. There isn't nearly as much of a north/south gap as there used to be - now, the political rivalries in California tend to be more coastal/insland. Plus, LA has become far more urban in the last 20 years than it used to be.

That said, I think you go too far in attributing this viewpoint to an irrational hatred of socal. I really like LA, and I just don't think you can find an equivalent of LA's beach towns (I'm thinking particularly of Manhattan, Hermosa, Santa Monica, or Venice) in San Francisco (including Santa Cruz, which I also like but has a very different vibe).

You definitely lined up some similar areas. But a mirror image? No way, that's going way too far.

(1) Some of this has its origins in the "water wars" of the mid 1970s.