my 7stw had a relatively light barrel and no brake and i had it re-barreled with a slightly heavier barrel, and little bastard brake, and recoil is way less. i actually didn't mind it before but now it's a lot less.
I don't have a way to quantify recoil, but this video shows a 6.5 Grendel ar15 shooting 123 gr Eld-Ms at ~2550, using a little bastard brakes. The wobbly "tic tac toe" supports really has the potential to exacerbate recoil. Draw your own conclusion.
That said, I think a bit too many electrons are used discussing brakes. While some really don't seem to work well at all, there really isn't a curly red's width of difference between most of the bigger names. Pick one you like and drive on.
Most of the brakes that folks use around here are quite similar- self timing, large ports, etc. Personally, I like the adapters that the Area 419 Hellfire and Sidewinder have to allow you to mount a supressor. Really though, the APA bastards, Area 419s, and the similars seem to be same from a recoil perspective.
It's a great brake I have a few of them well made well machined recoil reduction is significant. However if I had it to do over again I'd buy the Area 419 brake. I'm not sure what about the APA rationalises the $160 pricepoint. If I want to add a can the APA has the large flats to remove it and direct thread the can and I like direct thread but the downside is when I reinstall the brake I lose my zero since the brake isn't going to go back exactly where it was.