User blog comment:Wassboss/The Best Vampire Battle in ZA WARUDO: Dio Brando vs Dusk/@comment-112.198.64.34-20160909011951/@comment-3189283-20160909144618

"Dusk has superhuman strength which enables him to easily pick up and carry a normal person, rip someone's head off with his bare hands and send someone flying with a strong push."

- The Blog

This is literally the second line of information under the Powers and Abilities which roughly explains the power levels of Dusk in his human form.

As for his Vampire Form there is little information given other than "stronger, faster, deadlier" in the books. The only thing I can point to is that vampires in their human form (including Dusk) have been beaten by mages who were later shown struggling or being beaten by a vampire in it's true form.