Admit.org is demonstrably false for many admission statistics. Checking admissions statistics there vs. school-published data on official websites show no correlation (NYU, stanford, etc.)
This is partly because many schools (including Einstein) have not submitted surveys to US News for the past 2 years. Even when there is accurate data reported to US News, what is posted is usually 2 cycles behind.
Accurate post-II rates unfortunately are not public now for many schools unless they post it on their admissions page. For 15,000 applications --> 1400 interviews (last cycle, first post-tuition announcement), a better estimate is 15-20% based on the class size and yield.