Id like to hear a counter argument.
The khabib fight was a brutal display of rag rolling someone who has elite skill in one area. Half of Fedors career was the same thing. The other half was down to his own atributes and development as a mmartist, and i know that Sambo guys are also fighting guys who have developed many styles thesedays.
But as far as a single martial art goes, is there anything better than Sambo?