If you were looking for a small private undergrad school environment, neither Cornell nor Berkeley can offer that so forget it.
For academics and prestige, both are equally good, Berkeley May have more high achievers with high stats. It’s not some random state school.
Berkeley is cheaper, has better weather, diverse and politically active environment. It is situated in bigger town near a major airport. You are more likely to find internships and research opportunities there. You can use public transport for going home and save money.
Unless there is a strong personal preference, logical choice is Berkeley. This isn’t even a tough choice.