I am not surprised
He was the first lead Curly to dance the dream ballet in Oklahoma! ( London RNT revival). He won the Fred Astaire award for The Boy from Oz. In the same year, he dazzled everyone when he danced with the real Rockettes at the TONYs. On Back on Broadway, in his movie musicals medley he channeled many of the olden dancing stars. In last year's TONYs, he joined the tap dance by the After Midnight cast.
Plus, doing action movies for a long time must help develop similar muscles needed for certain dance abilities. And his dancing has a certain athletic grace that comes from strong physical prowess.
A real Broadway baby!