Athletic quarterbacks
Athletic quarterbacks (quarterbacks who can run and scramble as opposed to passing from the pocket) are all the rage in the NFL these days, both because they're fun to watch but also because they're successful.  But watching mobile quarterbacks in college football makes it pretty obvious that having that strength is also a weakness.  In high school and college football, defenses are undisciplined enough to allow some backyard football to happen quite a bit.  So a quarterback who can move around and dodge defenders can look like a superstar.  But as soon as a competent defense is involved, a scrambling quarterback is more likely a liability (notable exceptions abound in the current state of the NFL).  Mobile quarterbacks get accustomed to using their athleticism to get out of sticky situations, instead of developing proper decision-making skills, learning how to read a defense, and being content with throwing the ball away when that's the smart play.  The very thing that makes athletic quarterbacks successful in college is the same thing that makes them fail in the NFL. #sports

College football talent differential
One of the weird and cool things about college football is that there's an insanely wide talent gap between the best and the worst players, as well as the best and the worst teams.  That's partly why the Heisman Trophy is sometimes relevant -- occasionally there's a player who is just hands-down better than everyone else.  This unfortunately makes some games meaningless, such as all the "cupcake" games at the beginning of the season where a blue-blood team like Alabama or Texas plays an unknown like Tennessee ... State Tech, or Louisiana ... Monroe Community College.  Technically these teams are all at the same "level" but realistically there's no way in hell a blue-blood will lose those games. 

In the NFL, the talent gap is much less pronounced.  "Any given Sunday" means that pretty much any team can beat pretty much any other team on any given Sunday.  The NFL is much more uniform, almost predictable.  Sure, a great player can have a great game at times.  But more often than not, a good offense will find a way to beat a good defense, and a good defense will find a way to stop a good offense.  Players are more consistent, and coaching is more intelligent.  Talent is distributed fairly evenly around the entire league. 

In college football, great players are essentially unstoppable, even in a game between two good teams.  This is because the talent isn't spread evenly across the league or even across a single team.  A single amazing player can consistently beat a team of pretty good players simply because there's a measurable difference in talent.  Being taller, faster, or stronger is still a differentiator at the college level.  This difference is smoothed out a bit in the NFL, which is why it's still fun to watch college football. #sports