I can say that a 7mm Rem Mag with a good brake can feel like a 308 when fired.
This made me smile, remembering a day long ago when I shot a 7mm Mag and a .308 Win one after the other, and they felt the same to me, in recoil.
Neither one had a brake, and the recoil felt the same to me. They were both what in those days we called "good kickers!"
The difference was that the 7mm Rem mag was a friend's Rem 700 BDL, and the .308Win was my Rem 600.
The .308 also seemed louder, though that was probably because the muzzle was several inches closer to my face.
Recoil felt the same to me, but the 700 was a couple pounds heavier rifle. This wasn't a case of a "soft shooting" 7mm Mag, it was a case of a very light weight 308 kicking as hard as a standard 7mm Mag.
Stock fit to the shooter and gun weight as well as the amount of powder being burned all affect felt recoil. And, for some people, so does muzzle blast. A good muzzle brake, correctly installed will reduce the felt recoil, and it will increase the muzzle blast to close bystanders, because the vented gas is literally angled to the side and slightly rearward. There's no free lunch.