You are correct in my opinion. The problem was that Romney was "the worst" except for all the rest of them! Does anyone think Gingrich or Santorum or Perry or Cain or Bachmann would have done better? Each connected with a certain segment of the population and turned off the rest. Romney was if nothing else, the least offensive. The problem wasn't we "picked" the wrong candidate, the problem is the "right" candidate didnt run.
Further some of the Senate picks like last time (can we say Angle or O'Donnell) were SO flawed and enabled the MSM to paint all Republicans as Neandrathals who don't care about women. Laugh if you want at the "war on women" it worked apparently. Some are stupid enough to believe the propaganda.