Why do the objects in this rigid body simulation rotate too slowly? I was attempting to simulate a bowling ball impacting a set of pins, however the pins just slide away instead of going flying like they should:  



As you can see, the origins are in the correct place.

What is causing this?

Blendfile
Your pins are scaled to 0.144. Seems like the simulation doesn't like that. Apply the scale with CtrlA and you should be fine.