To put it honestly and in layman's terms... It's Hornady's ripoff of the 6.5 SAUM.
As to are they out-shooting anything? No, Hornady just has a hell of a marketing department, along with the fact that none of these new shooters out there know what the cartridges are that Hornady keeps ripping off and calling their own. Makes you wonder what's next? They going to ripoff the .30-06 and call it something fancy?
Just like the people who jumped on and bought into the 6.5 GAP 4s bandwagon and it's nothing more than a 6.5 SAUM with different throat dimensions.
There's 20 different ways this cat has already been skinned over the years, but because Hornady has a knack for ripping things off, slightly changing them, churching things up, give them a fancy recognizable name, they could sell a bag of ice to an eskimo...
I'm not hating on Hornady. I'm more or less frustrated with how dumb society is to buy into these trends.