All this glass is coming out of China now so I wouldn't doubt that it's off on accuracy.
I've read before that non A/C tint is off. (yes it did have a slight tint to it)
The laminate between the glass isn't correct either. You can only see it wearing polarized glasses.
RayBan Polarized sun glasses work well to see the differences.
Those of you with good quality polarized sunglasses can spot survivor glass vs. repro glass at car shows.