The kind of limbs doesnt really have anything to do with fogivness. The main reason the split limb was designed is to reduce weight. The things on a bow that will make it more forgiving are brace height and axle to axle length. The longer the brace height the faster the arrow getts off the string and rest. The longer the bow the more stable it is. I wouldnt compare split limbs to solid limbs. Neither really has an advantage.