Here are some stats that my guild mate calculated yesterday:
Saber of Exar Kun - PvP East
Ratio of Republic to Sith guilds: 99:253 (1:2.56)
Ratio of Republic to Sith players in guilds: 865:2446 (1:2.83)
Largest guild: 42 members (Sith)
Largest Republic guild ranks 3rd in # of members at 38.
From the looks of these stats our Republic guild, Stay Classy, is the highest populated guild on the server..only about 5-6 of us got in on the first day.
I wonder, are most PvP servers seeing this trend?