Regional differences in Borderlands 2

General question: Are there any differences in Borderlands 2, based on the game's region code?

Specific case: I received a game coded for Region 3, but I live in the U.S.. Are there any significant differences I should expect between this game and the game that is made for the U.S.?

I have been able to run the game, and everything appears to be in English so far. So, I suppose my primary concern is about any content differences - is there anything that was censored for Region 3 or, to my benefit instead, anything that was unlocked for it as opposed to the U.S. version?