Who won the first debate?

In my opinion, Mitt Romney won the first presidential debate. From the beginning of the debate Romney was focused and seemed to be determined to prove to the public his legitimacy. Throughout the debate, Romney seemed cool and collective while also being capable and prepared to argue or rebuttal any topic thrown at him. To me, Obama seemed defensive, especially when he continuously argued the 5 trillion dollar tax increase even though Romney refuted it every time Obama mentioned it. That also gave the impression of immaturity; instead of moving on and debating something else, he hounded that topic, as if holding on to one of the advantages he had over Romney (true or not). I also felt like Romney handled most of the topics that the curater presented much better than Obama did, both with answering and debating with his opponent. I also felt like Obama calling Romney "Governor" also showed signs of immaturity. Debate etiquette suggests that opponents call each other "he" or "my opponent", so when Obama reffered to him as "Governor" I believe it was a sign of disrespect and immaturity.