Same thing here. Upgraded to Gigabit service and I am getting 150/80 speed on an Alienwear with Killer e2200 Gigabit Ethernet Controller. The router test shows 980/900. What gives?
The speeds from my desktop are actually slower than when I had the 150/150 service!
Unfortunately Verizon only accepts the speed from their proprietary server to your home router. Nothing else is accepted. You are getting the up to speed. WiFi and device speed to your router from your device is not considered a Fios issue.