Which air hammer has more power? The Matco Maxx strike short barrel or Maxx strike long barrel air hammer?

I'm trying to decide which one to get...It says the long barrel has 2,200 blows per minute and the short barrel has 3,200 blows per minute. But it also says that the long barrel's piston stroke is 3-3/4" while the short barrel's is only 2-1/2". Does this mean that the long barrel has a more power but just doesn't hit as fast as the short barrel?