Quoted from tec9:Thats not apple meet apple.....you might have to make the following adjustments to your comparison:
The repro backglass does not have the manufactures name or logo
The repro backglass does not look like the original when illuminated (LED's vs. bulbs)
The repro backglass was made by someone who has never built one before....
Now that's a bit more accurate...
your first two points have zero impact on the game (heck the second one arguably improves it). the third point is wrong. The new machines are being made in the same factory as the original, by a company that's been doing this for 100 years. Chicago Coin made the original playfields and currently makes Stern playfields too. They're not an unknown upstart.