Really? Would you care to explain how a ball allegedly optimised to 15% of your game works?
I get how multi layer balls work for a variety of swing speeds - that is the intended purpose - but saying that a ball, or any ball, is optimised for a specific swing speed (and no, there isn't a equivalent iron swing speed) is plain wrong. Kind of dumb, especially when you consider one of their previous marketing lines was: "you can't argue with physics". It seems like Callaway has clearly defied the laws of physics - or defied the laws of golf. You can't change your ball mid hole to suit the swing speed that will be applied - let alone the trajectory, spin, shape and last but not least - the distance that may or may not be required. Like I said, nice try Callaway, but nothing other than "gimmick" passes this golfers BS radar.
You are entitled to an opinion ... even a wrong-headed one.
Generally, a guy with a 105 Driver SS will hit the higher lofted and shorter clubs on a graduated scale. When making the ball, Callaway takes this sliding scale into consideration when making the ball and the layers required for that ball to perform at that level of "speed" for all the clubs in the bag.
They just don't make a ball for getting battered only by a driver. Making a ball is complicated - different layers and materials depending on the performance goals for different clubs in one golfer's bag.