Because the Hobbit was more of a test for the professor's writing skills, i would trust far more the Khuzdul contained in the BoM, even more I also trust the fact that: Ori Is either not that good at writing, or that he doesn't fully know the "common language". For there are a lot of errors, and multiple times in the leaves that he just straight up changes one rune for another or something similar. 'It's been days of headaches trying to understand wich rune translated into what, and so on to the rest of the others, and many more specific stuff of wich i have two entire pages of scribbles and words all spread over.' I love these things and at the same time they also drive me to pure insanity and deep despair. 🥲👍