Shoguns knee problems are well known, past prime Shogun still managed to become UFC champion. Crocop was a absolute failure in UFC, no doubt. But imagine if UFC had gotten bought by Pride, do we know for a fact every top UFC figher would've still done as well in Pride? We don't know for sure, as Pride's judging system counted "the whole fight instead of rd by rd" & emphasized things like who came closer to getting the finish for example. Pride's system didn't seem too great for wrestlers, whereas UFC system seems that way.