I was accepted by UC hastings today at the same time. (...) Do you think the three universites, berkley, hastings and Davis, share the information about applicants? (...) Please give us more information about this problem.
I find it highly unlikely that these three universities share information about their pool of applicants and potential ll.m. students. Of course, I have no insights in the functioning of their admission offices but two things let me doubt your assumption: a) data privacy laws (of course, no clue about the details of US privacy laws, but if they are in any way comparable to the German standards, than sharing personal information with other universities would require your previous and explicit consent b) university competition both for excellent students and their money - why should they try to artificially adjust the pool of their applicants, especially since Berkeley is ranked so much higher than Hastings and Davis.
Any thoughts on my arguments?
I think you're right - there's antitrust laws too to worry about.