No, Hilary does not lose if she wins all the remaining primaries. She will be slightly behind in regular delegates and Alter is assuming that with weeks and weeks of victories and Obama losses, the super delegates will still pick Obama. They won’t. Most were Hilary supporters and a string of Obama losses will make a vote for Hilary perfectly plausible.
also the notion that obama would be more difficult than hillary to defeat in the general is equal nonsense.
"misunderestimating" the klintons in any way is equally foolish and dangerous