So I am really curious about a couple things I am hoping some people can clarify. The 2 cases I am thinking about are: Nick Diaz vs Gomi and JBJ Vs DC Nick was caught smoking weed, his win was overturned because it was deemed a performance enhancer... I believe the reason giving was it dulled pain and gave Nick an edge. JBJ was caught with cocaine and his win wasn't overturned and the reason given is that it is not a performance enhancer, only banned. So my questions are. 1) Is weed considered performance enhancing and cocaine isn't? 2) Is weed not considered performance enhancing but in Nick's case it was deemed that it was as a special circumstance. 3) Was it because it was in Nick's system during the fight and the cocaine was not in Jon's system during the fight, that the fight was overturned? I find it really silly weed could be deemed performance enhancing for pain reasons but cocaine wouldn't.... Does anyone have any insight on the differences in these cases that would get one overturned and not the other?