Does anyone here know if the Japanese PS3 physical copy of the book is the same as the Japanese DS physical book?
Yes, the physical
Magic Master hardcopy that's bundled with
Shiroki Seihai no Joou is identical to the one that comes with
Shikkoku no Madoushi. But you won't be able to get it with
Shiroki anymore because it was only available if you preordered the PS3 game in Japan. Basically they printed a surplus of the book for
Shikkoku, and in order to get rid of their stock they offered it as a preorder bonus for
Shiroki. If anything, the only difference is that the
Magic Master that comes bundled with
Shiroki has a sticker label on the shrink-wrap, while the one bundled with Shikkoku has no sticker. See the image below:
Left: Shikkoku | Right: Shiroki
You might still be able to get a hardcopy if you buy
Shiroki at a used game store. It would be nice for you to have two copies of the book. But even if you can't get a second copy, well you'll still have the one that comes with
Shikkoku.