Is UPenn's class the biggest one in Top 14? How about Duke and Georgetown?

Duke: "The new international students for the 2008-2009 academic year hail from 39 countries, with 76 LLM students, 16 exchange students, and 2 entering SJD students."
See http://www.law.duke.edu/internat/internationalstudents

Georgetown: "In the fall of 2008, almost 400 students entered the graduate programs at Georgetown Law."
See http://www.law.georgetown.edu/admissions/GradFAQs.htm

76

76 where, Santa?

76 where, Santa?

Nono, it's just like that: 400, including American LLMs. I have been told that by a Georgetown alumni last week.
It's not so surprising, if one considers that NYU offers 350 spots....

I wonder - is there really any difference in a class size? All universities state LLMs are studying with JDs. If the classes are not so small anyway, why do we need to look at them?