No, but Sununu or Jeb Bradley probably would have.
Why does Sununu have that Brown didn't in order to have beaten Shaheen?
Previous existence in the state, for one.
Also probably would've known better than to campaign mainly on muh ebola, muh immigration. As if these issues are of the utmost importance to New Hampshire. A non carpetbagger would be more politically attuned to their concerns.
Then again, this is a guy who thought the best way to beat Elizabeth Warren would be calling her "Professor Warren" and snickering. It only gets more clear with time that his win in 2010 was all about Coakley and the national environment and not at all about him. Just in the right place at the right time.
He wasn't incapable of victory in 2014, if that's what you're implying. He was just incapable in this particular race: He would have won the MA Governor's Race this year, he would have had a slight edge in the 2013 special, and even had a good shot at winning against Markey this year. He simply looked at all the opportunities, and chose the riskiest one, and his political life (at least for the next few years) is over because of it.