SJ > SF? Really?
Jackpot, Manch! Not surprising with the way tech is and the scarcity of building down there vs. the increasing of supply here with the many condo/apartment developments.
San Jose is higher for percent with degrees and median income. It makes sense that rents would end up higher. SJ has passed SF in all positive economic measures.
Is that rent per unit, per bedroom, or per adult? If rent per unit, then if there are more families in San Jose, this would make a lot of sense since they would want larger houses. SF is definitely low on families with kids, but that would mean that SF might be more expensive per adult/per bedroom as per your sense.