<p>You are going about it wrong. First wait and see if you get in to both, or one, or none. You never know. Then, I suggest visiting. To answer your question, you will have great job opportunities going to either. San Diego has a plethora of tech companies, just not as many well known ones like in the Bay Area. Plus there are companies in LA such as SpaceX and Box. If you get in to both schools, and you know you want to work in the Bay, just go to Davis. If you want to experience a different part of California for the next couple of years, go to UCSD. </p>
<p>Either school, if you have a good gpa, will give you great access to jobs in California. They are entirely different campus culture wise. Stop over-thinking it.</p>