Dr. Strange vs. Dumbledore.
Dr. Strange from the very end of his Movie versus Dumbledore from his movie appearances.
Fight takes place on Long Island and it's completely void of all macroscopic life except for Plantae.
Dumbles gets anything he used in the films and all stuff he would be able to use, reasonably. That means no Felix Felicis, time pendant, and horcruxes as Dumbles never used that stuff.
Dr. Strange gets all of his stuff he used as well.
So, who is more powerful, faster, stronger, etc?
Who would win in a duel?
Begin.