No offense, but that doesn't make any sense. A QFN package is a standard, as long as the pin count is the same the packages are [nearly] identical, even with varying functions and manufacturers. The only difference would be markings on the top of the case of the chip (which do seem to be missing).

That would be like me saying because you got an Amazon box in the mail is must be a copy of The Avengers, because that's what came in my identical Amazon box.