Yeah, BBTS doesn't always deal with the same suppliers that supply the Japanese stores (they sometimes get stock from those that supply the Asian market sans Japan) - so it would appear that this was the case, this time around.
The pin and comic book are included with those intended for the Japanese market and should be included in this record for the Japanese release (as that is the target of the release - the Japanese market).
Sorta like the different versions of Rodimus Convoy (Asia vs. Japan), I guess (which we still need more documentation on BTW - looking here, http://www.seibertron.com/transformers/ ... bag/20646/
, there seems to be some extra swag that came with the Asian version).
Some U.S.-based import stores ordered from those suppliers that take care of Japan, while some ordered from those that handle Asia. It's hit-or-miss as to which version you get.