The game of professional football has changed.
Offenses are more complex, with more athletic weapons spread more widely across the field. Pass-rushers come around both corners and through every gap in the line. Tight ends and running backs are receivers, not blockers, and beating modern hybrid-front defenses with athleticism is a necessity, not a luxury.
More than ever, wins are built on the back of the quarterback. As evidence, look at Andrew Luck, who in one season transformed the Indianapolis Colts from 2-14 league backmarkers to an 11-5 playoff squad.
Quarterbacks can't just look the part anymore. It's not enough just to have the "right stuff."