Wow! That was a lot of work. Thank you for sharing this information!
Let's sum it up and analyse it a bit:
Plextor (first line) and Benq (second line) scores:
96, 95, 95, 94, 95, 97, 97
82, 92, 94, 91, 97, 94, 92
That makes 6:1 wins for Plextor.
Biggest lead: Plextor with 96 vs. 82 (14 percent better) on CMC +R.
Benq only win has a smaller margin 97 vs. 95 (2 percent better) on Yuden -R.
Plextor results remain very regular within 3 percent (94-97) whereas Benq results vary more widely (82-97) with 15 percent.
Side Note: The scan of the Daxon media done in the Plextor was scanned at only 6x which might bias the result a bit in favour of Plextor.