This fantasy that Jon Huntsman would have been leading comfortably is just that, a fantasy. He is and was a terrible politician, with no natural base. He has all the same problems Mitt does, with the exception that he's even worse on the economy.
This.
Huntsman is not a duplicitous two-face who runs away from his records, mediocre governor, one-term, would-have-lost, tax evading, spineless opportunist. So no, not this.
His horribly-managed campaign was constantly off-message and extremely alienating to most voters. His problems may not be Mitt's problems, but they're still problems.