I just remembered seeing it some where as being 30/45/55 and you are right EliteKeyboards has it listed as 35/45/55 but just to be sure I went and looked around on some Japanese sites and all of them list it as 30/45/55 including
diatec (half way down the page). I guess to really be sure look at the box it came in. Maybe we can get patrickgeekhack to take a picture of his box because he has one.
EDIT: Forgot to add it is extremely hard to tell the difference between the 30g pinky keys and the 35g pinky keys using your pinky. I can tell using one of my other fingers but not my pinky. But that 5g difference does make it a little easer to do the aaaaaa ;;;;;; thing on them. My self I just don't rest my pinky fingers on the keys any more so no problem.