Bad results with OWC SSD

New version is supposed to give more accurate results with SSDs because it is not fooled by a "hidden compression" feature. Well, I ran the test 3 times on my OWC SATA3 SSD and it first showed 17 MB/sec (!) and then 80 MB/sec. My 2011 MBP boots in less than 15 sec ; I just duplicated a 36 Gb file in 3 minutes, that means it reads AND write on the same channel @190 MB /sec, if it just read it would be twice that flow. Now where would the hidden compression be in these operations?

Magic addict about Blackmagic Disk Speed Test, v2.1