Few things
The AR definitely recoils less, but the SKS is pleasant to shoot.
A few things as to why some people could go either way about which recoils more
Perceived recoil is a big factor. The AR seems more intense/louder, so it might seem to recoil more than it actually does (more so even with a muzzle brake).
The Ar also has better ergonomics. That is an integral part of recoil. The round fired and mass are obviously important as well.
Regarding the rounds fired. Bullet mass plays a much larger roll in recoil rather than velocity. 7.62x39 bullet weights range from 120ish to 150ish gr. AR bullets are usually 60ish gr. The 7.62x39 will generate more recoil.
The SKS has a larger reciprocating mass which adds to the recoil. Not so much as kick to the shoulder, but more as moving the gun off target. I have a Daewoo which is basically a gas piston AR. The recoil is similar to an AR (same caliber), but you definitely notice the extra mass of the gas piston as the sights end up further off target with each shot.
AR15 definitely recoils less, but both are very mild.
If you're concerned with an SKS being more than you'd care to shoot, I wouldn't worry. They are excellent plinking guns that women and young people who are not avid gunnies often enjoy shooting.
Try wearing plugs and muffs while shooting. It makes most guns seem really mild. A big big part of recoil is anticipation and thus perception rather than actuality.