In defence of the Samsung at the speeds it is writing it probably doesn't have any time to manage WA. Also faster write speeds leave less time for the NAND to "anneal". I'd guess this will become evident when the drive gets to MWI 1 (0 does not exist , at least on Intel drives).

As PE specs are based on minimum levels (not average) it should be possible to write well past MWI 1. I somehow doubt the Samsug will be able to though.

It would be good to see a representation of the writes speeds on the charts to balance things out a bit. One_Hertz for example took 14 days to write data that the Samsung has written in 3.3 days. One_Hertz MWI dropped from 100 to 86 over ~26GB of writes.

Also it would be good to see the relocated sector counts.