Starman (Jack Knight) vs Starman (Prince Gavyn)

Been reading through James Robinson's Starman series. Pretty safe to say it's a one of a kind series, in a good way (What other series could you see something like Copperhead bartering over antique transistor radios?)

Anyways, who wins?

Jack takes it. Gavyn had limited showings in Adventure while Jack had some of the best showings of anyone to wield a cosmic rod. It would however not be a victory by death as the three times Gavyn has been killed haven't taken ( including his origin).