It is no more misleading than many advertising claims which always seem to have an asterik limiting the claims. How many people actually get the EPA mileage printed on the sticker for their car?
If you think Verizon over hyped WiFi speeds how about router manufacturers? (150 300 450 600 ......1900 ).
I have the 75/35 package and connected using Ethernet often get 80/40.
Standing in the same room as the VZ router I can often get 55 down on its 2.4 Ghz radio. If I connect to the AP I have running off the Actiontec that has a 5 Ghz radio sometimes I can sometimes get 70 down.
I live in an area with lots of WiFi interference. I often can pick up 20 + SSIDs.
I use Ethernet for speed and the WiFi only for convience.