I've watched a few Inside box-and-one defenses against Look inside. The team who played Look inside had two equally good players on PF and C. What happened was GE picked one of them, let's say it was the C, and C had very bad shooting percentage while PF had normal or even good one. If C would have been much better than PF, I'm sure Inside box-and-one would work even better. But all in all, I still prefer M2M.