It worked in New Hampshire, no? Problem for her is, that this is not the final "word", with one more debate coming up. Otherwise, I would be more wary about the last impression effect. I remember having a bad feeling about the media playing up that tear moment last time.
Obama is starting to get the hang of this debating thing though.
Obama was able to go point-by-point with her on her signature issue, health care, and keep her to a draw at the least, to defend his more moderate approach, as they got quite detailed. I don't think Hillary was dissatisfied, as she got a chance to focus on a difference with him, and her only choice is to hope most Democrats will agree more with her position. But Obama's ability to go to a pretty significant depth of knowledge on policy as well did show.