Either the other cab isn't a mile away or your connected to the nearer one - at ~5kft you won't get above 30mbit max.
No idea - but the current VDSL2+ profiles don't give you 70mbit at distance of the best part of a mile - assuming ~0.6mile cable length thats about 40mbit sync speeds.
My cabinet is in a conservation area
DLing an update on steam at an average 9472.66 KB/s - absoutely ridiculous - said I was happy with ~10MBit/s ADSL2+ but loving downloading a 1.6GB patch in under 3 minutes