The amount of tissue it damages is dependent upon energy and velocity, as well as how well the bullet expands. A high-energy full-metal-jacket which just passes through and expends most of its energy into the wall behind the bad guy is not as good as a lower-energy hollowpoint which expands and delivers all of its energy into the bad guy.
But a high-energy bullet which expands and delivers all its energy into damaging the bad guy is better than either of the former.