You still haven't confirmed whether your were measuring the speed with a device having a gigabit ethernet connection.
I fully agree...The speed he is reporting sounds like a 100MB connection, instead of 1GB connection.
From my own experience VM is great.
-- Red (VM SH2 AC Beta tester) Running on 350Mb VM service with SH3 in Modem Mode, with a ASUS RT-AC5300 router. With this setup I get Fantastic WIRED and WIRELESS Signals in my home. I dont work for VM. But I work in IT, and I know my tech. My advice is at your own risk.