Given the ballistic similarity, I'd be more concerned over the characteristics of the rifle. Which cartridge allows me to build a rifle that comes alive in the hands, which can I get to balance out better, which is lighter, which is trimmer, and more svelte. Which rifle can I carry further, longer, higher, harder, etc? I suppose I've crunched too many numbers, and have done too many statistical analyses in previous professional roles. My time at the bench is about pure unadulterated rifle lust, therefore I'm more concerned with rifle characteristics than ballistics given how similar these two cartridges are.