The latency to Jolt is stable but a little bit high. Not entirely sure what's going on there. Perhaps it's having to take a longer route than normal due a link failure or something, see if it gets resolved.
As Paul said a lot depends on where you are, if you use Bulldog or another LLU operator pings will be similar to cable, only the BT based DSL tends to ping a little higher. My own LLU connection pings pretty well.
Pinging
www.bbc.net.uk [212.58.224.116] with 32 bytes of data:
Reply from 212.58.224.116: bytes=32 time=7ms TTL=247
Reply from 212.58.224.116: bytes=32 time=7ms TTL=247
Reply from 212.58.224.116: bytes=32 time=7ms TTL=247
Reply from 212.58.224.116: bytes=32 time=7ms TTL=247
Ping statistics for 212.58.224.116:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 7ms, Maximum = 7ms, Average = 7ms