Different reaults/same disk,same everything

I wonder why the results are so much different when I am only changing the scanner. BenQ DW 1640 BSLB/Lite-on DH 20A4P 9P54. It seems like Lite-on doesn’t allow pif’s over 3.

 Which scanner do you think is more accurate.

 BTW: I have more scans to backup my accusations or questions or whatever  

                                                       :confused:

It seems like when the disk is better the scans are closer

LiteOn is 1ECC scanner while Benq 1640 is 8ECC one .
Standard scanning speed for your 20A4P is 4X and for Benq 1640 it is 8X .
LiteOn will only show max 2 PIF for very good discs while Benq could show up to 8 max PIFs