Jon Stewart also apparently told Stephen Colbert he simply wasn't funny enough. This was more than likely done in jest, and I doubt there was any real animosity between the two men. Everything would go on to work out pretty well for the both of them (not that they knew that at the time). Stewart turned The Daily Show into a political lightning rod and gave it its biting voice, while Colbert went on to host his own widely successful spin-off in The Colbert Report before moving to host The Late Show on CBS.