There are many reasons for this, but the way in which each plays quarterback definitely is one of them. Kaepernick represents the new guard: a sleek, big-armed playmaker who can beat you in multiple ways.
Schaub, by comparison, is the old guard: a dropback passer who relies on good decision-making and precision with his throws. A revolution might be underway at his position, but Schaub feels there always will be room for signal-callers like him.
"In this league, it comes down to being able to stand in the pocket and make the throws and be able to take a hit in the pocket," Schaub told WJZ-FM in Baltimore, via SportsRadioInterviews.com. "You see certain talents coming out now -- the RG3s, Russell Wilson -- certain guys and certain types. Colin Kaepernick finished the season extremely well -- these type of players that can do a little bit of everything and do it well.
"It comes down to being a great decision-maker, and making those throws, being accurate, because you can't substitute for those things," he continued. "But you can see things happening, but offenses have to develop as well, whether there's the blocking schemes and being able to run things of that nature and have the running backs for it.
"A lot goes into it just more than the quarterback's skills. But you see things evolving and things changing, but I think it'll be hard to ever fully replace a pocket passer."
So does Schaub represent a dinosaur staring down the fiery meteor? The game constantly is evolving from a strategy standpoint, making it far too early to reach a conclusion about the read-option attack.
But Schaub is right about one thing: If you can't make the throws, you can't play quarterback. That won't change.
Follow Dan Hanzus on Twitter @DanHanzus.