There's more action in Baseball because there's less physical contact. Despite there being only 11 minutes of action, playing in the NFL is more hazardous than any other sport. And the history of player injuries supports this fact. On Sports Science they compared a Ray Lewis bull rush to Swat team battering ram. Conclusion, Ray Brings 1000 pounds of force per hit, a battering ram 800 pounds. Imagine being a running back playing against the Ravens, and being hit by Ray Lewis almost the entire game. Nothing compares to the punishment of the NFL. The only other sport is MMA and Hockey.
YouTube - Sports Science: Ray Lewis Vs. Battering Ram