Very fascinating thread! We have an MMr at work and there is an arcade close by with an original MM. I have to say, both play a little differently no doubt because the original is a lot more worn in, and even the flippers were not adjusted the same on both machines.
At Replay, they had numerous Funhouse pins. All of them played a little different based on playfield/mylar wear, flipper adjustment, etc. I think you would be very hard pressed (except for remakes coming off the floor) to find pins that play the same.