I'll take a Pet Rock over Jimmy Fallon, and throw it at Colbert. They both suck, but Colbert is anti-funny, he thinks it's funny not being funny. Even The Cleveland Browns are less unfunny.
I never watched Jimmy Fallon before his Tonight Show gig and I find him funny, funnier than Colbert as I think he is a little more unique in his humor where Colbert has a standard kind of humor he sticks to.
Colbert. Fallon peaked doing the taped commentary for the Universal studios bus tour. And he wasn't very good at that either
Colbert all the way
Colbert. Jimmy is nice but kinda dull.