Added weight at the front of a pistol will do that. Unless it is attached to the barrel it doesnt really do that much.My father-in-law has an EFK comp and an EFK dual-action recoil spring. After adding both of those, there was a considerable reduction in recoil over the stock spring and rod. We both feel that the felt recoil and muzzle flip is very close to that of a 9mm now. Estetically, yes the compensator does look great. But i think it also does its job when it comes to reducing the ammount of muzzle flip.
I had one on the attached 1911 for over 5 years and the added weight did help with the recoil allowing me to get back on target quickly. On a whim, I replaced the bushing with a match bushing and it immediately dropped over 1" off my groups. Though it did reduce the recoil the tolerances were off and thus it was less accurate.that may be. i'm no scientist, but i do see a difference. thats all that matters to me.