Latest poll shows Romney would win says Obama Camp. Do you agree?

Obama campaign manager Jim Messina wrote today, “If the general election were held today, President Obama would lose to Mitt Romney—according to the latest poll from Washington Post-ABC News.

Is this a true picture of how things would play out today if there was an election or merely a veiled “fear” campaign strategy to garner more donations? If so what are the underlying reasons that would cause our incumbent President to lose to someone like Mit?