Cro Cop, Noguiera and Fedor lost against higher caliber fighters once they moved to Strikeforce/UFC/Bellator. Pride was oligopolised by Fedor, Noguiera and Cro Cop. Those 3 were unbeatable until Pride disbanded. Pride at the time was better than UFC (1997-2007) Brock Lesnar (heavyweight), Randy Couture (heavyweight/light heavyweight), Chuck Liddell (light heavyweight) and Anderson Silva were dominating UFC when these Pride guys came in 2007. UFC and Strikeforce had better fighters starting from 2006- a year before the end of Pride's lifetime. This is why the Pride guys lost. Since 2011 UFC has been in its Golden era: Stipe Miocic/Fabricio Werdum/Cain Velasquez/Junior Dos Santos- unpredictable heavyweight division Jon Jones/Daniel Cormier/Alexander Gustafsson/ Anthony 'Rumble' Johnson- everyone of these guys can beat one another- we saw that with Gustafsson losing by split/majority decision to Jones and DC and Rumble brutally knocking out Gustafsson Whittaker/Romero/Weidman/Rockhold/Bisping- ever since Anderson Silva's dethroning there's been a vacuum as to who the best Middleweight is. Cyborg/Amanda Nunes/ Shevchenko/ Holly Holm- unpredictable women's division since Ronda's dethroning By 2020 most of these guys will have retired. You're not going to get UFC this good as it is now.