So Nog could hang with Werdum in the ground even though Werdum has the better grappling pedigree, thanks. Pretty much confirms that MMA grappling!=Grappling.
Same goes for Shinya Aoki. He is known for being a grappling monster in the MMA world but I do not know about him in pure grappling. Anyone want to clarify his jiu jitsu background? I mean, he is a black belt at Jiu jitsu and Judo and I know he lost against a Gracie in an ADCC tournament but has he done anything else? (In pure grappling)