Idk the respective paps of each bowler, but weak layouts on strong balls have been a staple for years.
The strong cored balls go through the pins better, when volume allows those balls to be in play. In order to keep the those balls from farting at the arrows and get down lane, you need them to "lope". But not "lope" to the point where they won't respond, hence pin down, so they roll, long pin to pap, so they lope.