College football = smaller egos and more fun to watch
Pro football = huge egos and more commercial breaks with better commercials :-D
It is a completely different game, college tends to move a little slower on the field, more running, more long bombs, but less defense usually. College also has a greater disparity between the defensive player and the offensive, in that a the person on the other side of the ball has a greater chance of being far better or far worst than their opposing player than in the NFL.
I like college because there are usually more big plays too.