Melinda Henneberger points out, Romney's default position on every topic is to cravenly go along with whatever the most recent person has said.
Then there was the time last week when Romney had neither the balls to defend an aide attacked for homosexuality nor the courage to openly side with the religious fundamentalists against the aide. Romney just threw the aide under the bus and declared the "flap" to have "blown over."
Romney's milquetoast-ism includes his attacking Obama for taking credit what what he did do (authorize the Bin Laden raid) and in the next breath trying to take credit for something he had nothing to do with (the auto bailout).
There is also Romney's incessent whining about everything from reporters questions to his opponents campaign tactics to people noticing that he was born with a silver spoon in his mouth. Nothing bespeaks a wuss more than a tendency to bellyache.