No, actually, their approach is quite different. Sometimes there is IPblock, should not be for AA tho. And there was never this horrible KSSN/identity check thing. There you just have to register like you are used to. Still its hard cause hey you lack their credit cards, etc.
Basically if you speak Japanese, you will go on, it will be easy for you to get there. If not, well... If not, it is a waste of time. Pretty much the same as on the Korean servers. I do not consider a community I do not understand + ping over 300 a worthy experience. And beware, this is not certain, but I would expect Japanese to be slightly more hostile towards foreigners then Koreans are.