The Weber hit on Anisimov wasn't to the head. The Mitchell hit on Toews back in 2009 wasn't to the head. Both concussions that weren't head shots.
If Torres doesn't hit Hossa in the head, he's still concussed, because of how violent the hit was.
A violent shoulder to shoulder or shoulder to chest body check is just as likely to cause a concussion as a hit to the head. As is taking someone's feet out from under them, and their head snapping back when they hit the ice. Or boarding, that doesn't involve the victim hitting their head, but their head snapping violently.
Head shots are absolutely a problem, but changing equipment isn't going to make a damn bit of difference. I've seen guys concussed in beer leagues from collisions more times than I can count, and most guys aren't wearing ANY shoulder pads out there. They certainly aren't throwing elbows to the head, either.
You take a couple of really fast players, and put them on a collision course, and the outcome isn't looking good for either one of them. Regardless of head contact, or not.
Again, it's just the nature of the game. Guys moving 20-30 MPH, stopping instantly, are going to get concussed. It's an inevitable outcome of how our skull is designed... You cannot beat physics.
The majority of the PUBLICIZED concussions are from head shots, sure. And there are likely tens of hundreds that go unreported, or undiagnosed, every single season. I'd seriously bet that there are more concussions that are undiagnosed or unreported by the player, than concussions that are (there are statistics that back this up, as well). I know a lot of hockey players, I talk to dozens of different players, on an almost daily basis. I'm around the game and at an ice rink pretty much every day of my life. When we're sitting around at the bars after games talking about this topic, pretty much anyone that has played check hockey will admit to having suffered many more undiagnosed concussions, than those that were ever diagnosed. Especially now, with what we have learned about the symptoms, and after effects. And we still have a ton to learn about them.
The NHL hasn't even scratched the surface on concussions. Their concussion spotters are still absolutely terrible. I lost count of how many times I saw a guy get his bell rung last season, and go right back out on the ice, without going through protocol. Unless a guy takes a head shot, or is down and out, they pretty much never send them to the quiet room. It's a joke.