California has massive selection filters, and has had for hundreds of years. Only the few and brave moved there. California definitely is my personal aim for a great place to be. Outside filtered areas, such as the universities you mentioned, I think my claim remains true.

So I predict that people in California that have not been preselected exactly because they want to work crazy hours, start a startup, or become an academic will be less productive than the same people in Boston.

I maintain, to a lesser extend, that undergrads in California also work fewer hours.

People who moved during adulthood might report about that.