You're right of course, but personally I don't care too much about how close to the gen a rep is (OK, if it's not TOO obvious...), I would never worry about the Rehaut engraving for instance - to me it looks great. I do hate those little imperfections like a spot on the datewheel, a slightly misaligned index or a faulty lume dot though...
All my friends know that my reps are reps - and whenever they take a closer look at one, they pick a little imperfection like those mentioned above and say "oh yeah, chinese... not even close... look at that...". i really try to convince them how good those reps actually are for the price, but you know...
So I always try to make my reps look technically as perfect as possible. If it's not spot on with the gen - well, no one will notice anyway except gen owners and RWG members...