It allows the hunter more options
I have rifles now available for me to use in Ohio that perform "worse" than my dedicated slug gun.
My Mossberg 695 is a 150 yard gun. And would probably be a 200 yard gun if I wanted to spend the time and money to get it there.
I haven't shot some of my .44mags past 50 yards (they would be capable of 100 yards at least) but they wouldn't equal the 695 at 150 I'm pretty sure.
It's not all about performance.
-Jake