It seems to me he could have done a lot more. Look at the gif... OK, he missed the leg, he could have grabbed JDS's waist right when his shoulder touched JDS's hip. His shoulder stayed in contact with JDS's hip for sometime. There was plenty of time. Even at the end of the sequence, when Cain's knees touched the ground, he could still have grabbed JDS's legs again. They were right there. He gave up too easily. In his other fights, he always struggles and scrambles for opportunities. It looked a little out of character for his fighting style. May be a little too much respect for JDS's power.