While many of their stats have been hidden and some convoluted there isn't enough evidence to suggest specific programming that would alter things like drop rates based on an account. It would actually be absurd to even tie any account number or variable into the formulas. The hidden enchant rates where just that. Not disclosed. Nothing fishy was ever discovered in the process. The Kutum hidden bonus makes reasonable sense. A PVP vs PVE type weapon that is very common. Even the class based variables in PVP damage makes sense. It was a way to alter and make quick balances without affecting PVE performance.