Because he has not resorted to doublespeak in demonstrating that he can lead (and win).

Because he has not voted--out of political expedience--for an unjust, unnecessary war--a war which has killed untold thousands of Americans and Iraqis. A war which cannot just be quit but must now be finished.

Because he has not entered Race into the campaign.

Because he has not entered Gender into the campaign.

...and Hillary has.