in more serious news, how about we compare greatest change from really good/great pres to really bad/horrible pres, vice versa.
quincy adams/jackson?
buchanan/lincoln
lincoln/johnson
wilson/harding
hoover/roosevelt
carter/reagan
clinton/bush
bush/obama
obama/trump
Agreed mostly except I would imagine you mean Wilson and Harding the opposite that I do. Harding was elected in a landslide to turn around Wilsons mess and did just that. As to the OP, I would say Obama is more intelligent than Trump, although Trump is not as stupid as his tweets and sound bites make him out to be. If nothing else he is at least cunning.