Troy Denning implied in a fan question who'd win a fight between Caedus and Krayt would be close. Not really sure what if anything you could gather from his response, but it sounds like to me it'd be an even split. Here was the question
I'm not sure how often you answer questions from fans, but I was curious to know about your interpretation of Darth Krayt's abilities. When Jacen saw the dark man on the Throne of Balance, if he had gone after him in your mind who would've been victorious in a potential duel between Darth Caedus and Darth Krayt? When you wrote him did you intend him to be the Darkside equivalent of Luke? Would you say he was greater than Caedus?
His response:
You know, I'm not sure I ever thought of it that way. As a very wise Kyuki-Do Grand Master once said, "All those stripes on your belt mean nothing, if you fail to see the first blow coming."In all honesty, the small amount of experience I have in such matters, there are no certainties, only odds. And I woudn't care to lay odds in that fight.
Yeah, not sure what if all you could gather from that response lol. But he at least implies Krayt in FOTJ is a peer with Caedus in a fight