Idk, I still do not see how the 308 is “considerably above the normal or average”.
@Truduct saying a cartridge is “just as capable” is the opposite of great.
I do know that if I brought my 308 on my elk hunt I would most likely be home without meat! Even my close shot at 300y was steeply quartering away and I am not convinced that the 308 would have penetrated the lungs. I do believe it would have killed the elk but tracking / gut shot may have made it unfindable.
To me a great cartridge allows you to take shots from nearly any shot angle.