Sorry man , just saw this. The G4 is much stiffer, has almost 0 flex, you will notice the neck of the bat is MUCH thicker at the taper than the other SP lines. Barrel still feels good. I hit it in Mens FP with .47/375 balls and it goes great. Has no PED. But it is REALLY stiff in the taper / handle and soft and nice in the barrel.