Sure he's had some nice wins at some point but not legend worthy, anderson is a legend, gsp a legend, fedor a legend, henderson a legend and penn a legend, rampage hasn't done anything to stand out above the pack like these guys in my opinion.
Of course he has. Destroying Chuck twice in his prime. Once in Pride and then to claim the UFC LHW title from him with a brutal KO. Epic, unparalleled KO slam on Ricardo Arona. Fantastic wars with Wanderlei Silva. I don't need to ramble on, his achievements and fantastic highlights speak for themselves.
Rampage is and always will be a legend of the sport.