Is that a trick question?! :)
The difference between:
Washington and Obama - Washington was a divinely inspired statesman who turned down the offer to become King. Obama is a godless Marxist liar and wannabe king.
Lincoln and Obama - Lincoln freed the slaves and saved the union. Obama wants to enslave the free and destroy the union.
Reagan and Obama - Reagan promised peace through strength and delivered, Obama promised to end wars by walking off the battlefield and destroying our defenses, delivering us to the enemy.
Carter and Obama - Carter was a US Navy veteran who served our country in uniform, and made a better president. Not much better, mind you, but Obama is the worst ever.
Palin and Obama - Palin has a set.
I love that tribute. The gun ain’t bad either :)