I was mistaken about the position of the sensor in the Screen Cezanne. Sorry about that.
For my own satisfaction, I just performed a scan with my Epson V750 where I placed a 5x7 negative so that the scanners' sensor would need to pass through a piece of anti-Newton glass before reading the film.
Scanned it as 16 bit grayscale at 2400 dpi. Sent it to Photoshop and blew it up to 100%. At that magnification, I was just barely able to detect the texture of the anti-newton glass. At 200%, it was easily seen.
Perhaps the higher quality of the lens and focusing mechanism of the Screen Cezanne, as well as it's finer textured anti-Newton glass, accounts for the difference.
I still feel that it's not a good idea to allow the sensor of the Epson V750 to pass through anti-Newton glass before reading a negative or transparency.