In The New Teen Titans Vol. 1 Issue 11, Kory, Donna, and Raven are on Paradise Island, and Kory spars with the Amazons in their arena. She handily beats them, having been trained in martial arts as a child, and Hippolyta even remarks to Raven that she could rival "my daughter Diana herself". The Queen of the Amazons compared Starfire to Wonder Woman!
Kory's battle with her sister Komand'r (Blackfire) in The New Teen Titans Vol. 1 Issue 25, after Komand'r has kidnapped and tortured her and tried to sell her back to the Citadel as a slave. Blackfire is a powerful combatant, trained in the same martial arts and given the same starbolt powers as Kory, not to mention that she's been standing around while Kory's been beaten down repeatedly—but she still can't measure up to Starfire.
Kory: Come on, Komand'r. You've been attacking me for days. You've been swearing that you're so much better than I am. Let's see you prove it, sister!
In The New Teen Titans Vol. 1 Issue 27, the Titans do battle with drug smugglers, and Kory uses her starbolt powers to slice their ship clean through. It has to be seen to be believed.
From the tabletop game:
"This is Rear Admiral Aileen Sommers, Terran Federation Navy, commanding Survey Flotilla 19. I wish to report my flotilla's somewhat belated completion of the mission on which it departed this system approximately five and a half standard Terran years ago. I also wish to report, in my capacity as de facto ambassador from the Terran Federation to the Star Union of Crucis, that the Grand Alliance has a new member."
