A bunch of people hunt with one and don't event know it...They call it a 7PRC. Nearly identical performance.
To me there's 3 little things, actually 4 that make the PRC shine. Proper throat dimensions for heavies, ease of feeding, great factory offerings and the 4th being the Hornady marketing machine.
You could add 3a saying it's a matter of time till Lapua starts making brass.
All that being said, the 7WSM is a great round and I'm not sure what caused it to flounder where the SAUM has hung around in reloading circles.