Widow, I agree... I am using the rage as an example of how a wider blade doesn't penetrate as far as a thinner head would. Don't forget the compound arrow is traveling much faster. I also agree that there may have been a shaft issue before the shot was taken.
Five or six years ago I shot at a deer that was almost perfectly broadside to me when I released. The deer was on alert and when the arrow got to it the arrow hit it in the front of the lower neck. Upon internal inspection the next day the two blade head penetrated one lung about 1/2". I guarantee you if I was using a even a three blade head or a wider land shark I would have never found that deer.