Now, compare both of those to this pic. They're not even in the same ballpark.
Realize that an artist's depiction of a person doesn't necessarily have anything to do with the person in question.
Lincoln trampled over the Constitution far more than Obama ever did. Only reason Lincoln gets a pass is because he was assassinated. He got lucky to have had Grant to end the war because all his other Army of the Potomac generals were either too cautious or too inept.
Lincoln was a son of a bitch for certain.
He didn't even care about freeing the slaves until it was politically convenient. His deal was preserving the 'Union', w/e, the Confederacy should have been allowed to secede.
I'm not sure what point you're trying to make, but I'm quite certain that it's silly.
Now, compare that to this pic. World of difference.