Less than grand is putting it nicely. You can say it, some have shitty skills or basically no skillset at all. Some are good but I don't think any of them are great in terms of BJJ skills. If you wanna see great you should come of No Gi Worlds or No Gi Pan Am's and watch the best go at it.
RICARDO ALMEIDA-BJJ black belt under Renzo Gracie, and he has competed in various Gi BJJ tournaments and the ADCC’s absolute division.
DEMIAN MAIA- ADCC World Submission Wrestling Championships, ADCC 2007 77–87 kg: 1st place ,ADCC 2005 77–87 kg: 2nd place
CBJJ World Championships
2001 Brown Belt Medio-Pesado: 2nd Place
2000 Purple Belt Medio-Pesado: 1st Place
1999 Blue Belt Medio: 2nd Place
CBJJ Brazilian Championships
2006 Black Belt Absolute: 2nd Place & Black Belt Medium Heavy: =3rd Place
2002 Brown Belt Medio-Pesado: =3rd Place
2001 Brown Belt Medio-Pesado: 1st Place & Brown Belt Medio-Pesado: =3rd Place
CBJJ Brazilian Team Championships
2003 Brown/Black Pesada: Master, 1st Place
2002 Brown/Black Pesada: Alliance, 2nd Place
2001 Brown/Black Pesada: Alliance, 1st Place
2000 Purple Belt Pesada: Alliance, 1st Place
CBJJO Copa Del Mundo
2005 −85 kg Black Belt: 1st Place
2003 Black Belt Meio Pesado: =3rd Place & Black Belt Absolute: 1st Place
2002 Black Belt Meio Pesado: 1st Place & Black Belt Absolute: 2nd Place
2007 ADCC Submission Wrestling World Champion
2006 Pan American Champion
2005 ADCC Submission Wrestling World Runner-Up
4x Brazilian team champion
NATE DIAZ-Brown belt under Cesar Gracie.
B.J. Penn-BJJ black belt, first non-Brazilian winner of the World Jiu-Jitsu Championship in the black-belt category, CBJJ World Championships 2000 – Black Belt Pena: 1st Place, 1999 – Bronze medal at Brazilian Mundials.
GABRIEL GONZAGA-2006 Winner CBJJO Copa Do Mundo Black Belt Pesadissimo Winner CBJJ Mundials Black Belt Pesadissimo, 2005 2nd CBJJO Copa Do Mundo Black Belt Pesadissimo 3rd CBJJO Copa Do Mundo Black Belt Absolute 2nd place ADCC +99 kg,
RICARDO ARONA-ADCC World Submission Wrestling Championships, ADCC 2003 Superfight championship: Defeated Mark Kerr,ADCC 2001 88 – 98 kg: 1st Place Openweight: 1st Place, ADCC 2000 88 – 98 kg: 1st Place, CBJJ World Championships 2000 Black Belt Pesado : 2nd Place, 1999 Brown Belt Pesado : 1st Place Brown Belt Open Weight: 2nd Place, 1998 Purple Belt Pesado : 1st Place, 1999 Brown Belt Pesado: 1st Place.
Yeah, no world class grapplers here at all.