Sure Seth is in a bigger company. But that's like saying the only reason Tom Hanks is a bigger actor than Jake Gyllanhaal is because he's in bigger movies. Seth is there for a reason. It's not accidental. If you get there and you stay there, it's because you're good enough to be.
That said, it IS possible arguably get to that level without being in the WWE. AJ Styles and Kenny Omega arguably did to SOME degree. But I wouldn't quite put Will at their level to be honest.
And I wouldn't say guys like Curt Henning careers didn't amount to anything. I just wouldn't put them on the same level as the top stars of their era. Not every wrestler, even really good ones, are going to be at the same level. That's just how it is. If everyone was a top guy, no one would be a top guy. Again, I'm not saying Will doesn't have a perfectly fine career for himself... I'm just disputing that he's on the same level as Seth. If we're all in agreement there, then cool. We're done.