Romney may shrink from attacking Obama as relentlessly as he should, it occurs to me, because he confuses fighting with shrillness or nastiness. In re which, I offer a picture and a video.
The picture: A shot of ObamaCare as the legislation looked when it went to the White House for President Obama's signature.
The video: President Reagan's 1988 State of the Union Address. Take a look at the passage that runs from 16:32 to 18:56.
See? A politician who knows what he's doing can simultaneously prove gentle, warm, likeable, humorous--and utterly devastating.