kenny was set to 25% dmg, round 2 and 3 are extremely close. If the text written is correct, I think kenny lost round 2 by one punch, kenny also worked Smith first 2 minutes of the third before the clinch, round 3 ending pretty much even in strikes.
Also, if the commentary just isnt fluff it looks like Kenny landed the heavier shoots in round 2 and 3. Guess it was one of those fights.