Yes they do have all sorts of disclaimers re contention and download speeds in relation to distance from the exchange, my exchange, well little shed thing is about 400 yds away but all the phone lines are on overhead poles, none of this new fangled underground stuff!
my router is reporting 8128KB download and 448KB upload speeds and having just downloaded a 50MB file I saw around a 600KB download speed
Will see what I get tonight when all the natives come back home