Neither are off, all the numbers are perfect. I’m generally pretty hesitant to make statements like this but I’ve tested it so much that I can very confidently say that the numbers are right.
Because this keeps coming up, I keep testing it. In total, I have now done a total of 500 recorded crafting tests on the live version of the game. My luck variance was -0.02%. Anything within 1% and I would call that accurate. My results were 50x more accurate than I would need to be happy with the system.
I have also done simulation testing. This uses the exact same functions as the actual crafting but instead of just doing it once, it runs each craft 1 billion times. This was accurate to a number than can only reasonably be represented with scientific notation.