The Aurora/Pyro Yamato kits share the same overall characteristics and layout, both as to the real McCoy as well as a kit. Of course, they are different scales but the similarities indicate a copy. I don't know who cut which mold first but I suspect Aurora. The big issue is the asymmetric secondary armament, those phony little pillbox guns and the poor boat pockets. The fixes for these problems on Aurora's 1/600th kit are fairly easy but who would bother ? There is a good build of the Aurora kit, easily found.
The Aurora Bismarck is simply unbelievable. It's such a laugh I wonder how they got out of the prototype department with it, even for 1957 or precisely whenever they cut the molds, I'm not looking it up. There is little to claim it represents Bismarck other than the name; it's complete junk and likely the all time champion of an inaccurate kit, hands down.