As Roy Jones and James Toney went up in weight, their knock out power had significantly decreased, even though they both had a high KO ration in the lower weight class because of their KO power. Their power that would be deemed average in the HW division seemed to be more powerful against lighter weight fighters. Like for example; Randy Couture was not the hardest puncher as a Heavyweight, but say he fought at 185, I am sure he would had knock dudes out at that weight division. Conor is a power puncher as a featherweight, but as a welterweight his power has decreased by alot. This is the reason why he will struggle against Nate Diaz, especially when you consider the fact that Nate also has a pretty good chin. Conor trying to knock out Nate is like Roy Jones trying to knock out John Ruiz or James Toney trying to knock out Samuel Peters. It ain't going to happen. Eventually Conor will gassed out and Nate will win by submission or even TKO.