I'd say they held their own. FoxNews was pumping up Rubio, and making sure Cruz didn't fall on his own accord. I think for external reasons (ground game, Cruz eligibility) votes will migrate from Cruz to Rubio. This debate is in harmony with that outcome, too.
-- I would say Trump got what he wanted out of the deal. --
Yep. The debate wasn't about him. Couple of "cheap shot" jokes, nothing stunning, made in passing. No serious suggestion that Trump has a problem on the issues, or of character or temperament.
Sum total, IMO - status quo.
I did not see it and the stories I read about it were conflicting.