Its for mother climbers that have toddler in tow.
I wonder: was it the pop-tarts that caused the constipation? Also, would it have not been quicker to just take the kids sled from the top of the Pearly Gates? Or the Chute?
I don't think they share the same final pitch. I though the B/D is the splitter fingers/hands to the summit, the B/S is around the corner in a corner crack.