I did not mean to detract from Rose's win because it was specatacular and showed her power, timing, and preparation.
But here is my point:
Do you believe that Rose would KO Weili like that 9/10 times? If not, then there must be a certain amount of luck going into it.
On the other hand, we saw conclusively that Holloway would beat Kattar at least 9/10 times. Anderson Silva would beat Forrest Griffin at least 9/10 times. GSP would beat Dan Hardy at least 9/10 times. Couture would beat Tim Sylvia at least 9/10 times...etc.
Do you see how there is a difference in these matchups in terms of how much luck is involved? When we can accurately gauge the skill level and the skill gap of the two contenders, that is where we can put our foot down and say "no, luck has nothing to do with the win."
In the case of Rose/Weili and Conor/Aldo, I just don't see how this is the case.