This vid above says that PBF has no power when throwing it because he is not doing the lower body motions at same time as his upper body. I am not too sure how correct that is. There is more than one way to put power isnt there? And I still believe it is more powerful than the standard jab. Now I believe this lead cross is under utilized in MMA. I see more jabs, because fighters are keeping their distance. To use lead cross, even PBF, you have to stand in the pocket. Now most MMA matches, the striking portion is always outside. Probably to avoid flurries. But in MMA, you are allowed to clinch and tie up the arms. That should shut down a superior striker's striking anyways, so the pocket should not be terrifying to be in.