It's high for ADSL, not VDSL. (I have VDSL at the house, we have 24mb service). VDSL is capable of speeds well over 100mbps.
However there's a lot of stuff out there that is marketed as "DSL" but it's really VDSL, but even that has varying technologies (FiOS, FTTN, FTTP, MoCA, etc)
To the OP...