What you get with cartridges like the 6.5 creed(6.5x55,.260 rem. 6.5x47 etc.) over others like the .308 is the best of "the most with the least". The most BC., SD., mass and velocity with the least amount of recoil, blast, wind drift..., to effectively kill most big game animals in N. America( and Charles Shelton might have argued "All" NA big game animals).
If you are going to parse numbers, the less recoil of the creed wins out. And less recoil makes for better hits... and hits count.. and better hits count betterer.
