Rickson Gracie's opinions about other BJJ fighters, and fans' opinions about Rickson's opinions:
http://global-training-report.com/Rickson2017-assistir.htm
http://global-training-report.com/Rickson2017-assistir.htm
I've only seen one video and it was back and forth. At least he gives Buchecha and Marcelo creditPretty standard Rickson interview, though the thing about Rolls being 'almost as good as him' I hope was a bad translation, since all the (limited) footage of Rickson and Rolls training together Rolls totally owns him.