CNN was certainly more sneaky than CNBC was in terms of getting the panel to fight with one another. Whereas CNBC randomly tried to take the panel apart by creating a brawl CNN was more calculated.
They wanted to harm Rubio as in recent polls he is the only one that is shown to be able to beat Hillary (not that cross party polls this early mean anything). So, they pitted the best debater Ted Cruz against Rubio. Rubio made several mistakes. One was asking Cruz a question which is always a mistake in any debate as that tosses the time back to the person you asked the question of. And Cruz being a master debater took full advantage. Cruz won the exchanges with Rubio.
On the other hand CNN wants Trump to get the nomination so they continually pitted Jeb Bush against him knowing that Trump can easily defeat Jeb in most exchanges.
The big loser of the night was Rance Prebius the retarded head of the republican party. He's a disgrace for even agreeing to the debate on CNN. If you notice the democrats will not debate on FOX. They know what they'd be walking into. On the other hand Prebius continually makes these types of mistakes. And not just this time around but also last time. Allowing Candy Crowly a left wing feminist to be the single moderator of one of the Obama/Romney debates.
Rance never learns and needs to be replaced.
As for the winner of the debate. Here's my take on the top three:
Jeb Bush (better than usual)