I don't believe that you did anything wrong by putting your pup through this test. I believe that the breeder is not breeding with the breed standard in mind. That breeder is breeding towards their own ideas odds what they want for the breed. This could be a change in temperament and size. This may have everything to do with political correctness of the culture in your country.
It is possibœle that the dog is slower to mature and will still make a great guardian. However, if it doesn't do not get a dog from anyone in the east. You should get an import. Do some research on the breeders before you select a pup .There are a number of people on here with years of experience in this breed. I suggest you learn what to look for from them.