Yes, because they give the give the closest to legit rankings out there.
Example?
IBF Champion & Top 10 Welterweights:
Champion: Kell Brook
1 NOT RATED
2 NOT RATED
3 Sadam Ali United States
4 Diego Chaves Argentina
5 Kevin Bizier Canada
6 Fredrick Lawson Ghana
7 Chris Van Heerden South Africa
8 Konstantin Ponomarev Russian Federation
9 Rico Muller Germany
10 Shawn Porter United States
WBA Champion & Top 10 Welterweights:
Unified Champion: Floyd Mayweather
Regular Champion: Keith Thurman
COUNTRY
1
ANDRE BERTO INTERIM CHAMP USA
2
AMIR KHAN GBR
3
MARCOS RENE MAIDANA ARG
4
SHAWN PORTER USA
5
TEERECHAI KRATINGDAENGGYM THA
6
SADAM ALI INT USA
7
JOHAN PEREZ NABA VEN
8
ERROL SPENCE JR USA
9
DIEGO CHAVES ARG
10
ROBERT GUERRERO USA
WBC Champion & Top 10 Welterweights:
Champion: Floyd Mayweather
1 .- Amir Khan (GB) SILVER
2 .- Danny Garcia (US)
3 .- Shawn Porter (US)
4 .- Antonin Decarie (Canada)
5 .- Marcos Maidana (Argentina)
6 .- Brandon Rios (US)
7 .- Konstantin Ponomarev (Russia) NABF
8 .- Ray Robinson (US)
9 .- David Avanesyan (Russia)
10 .- Robert Guerrero (US)
WBO Champion & Top 10 Welterweights:
Champion: Timothy Bradley
1 Sadam Ali (Int.-Cont.) USA
2 Manny Pacquiao PHI
3 Brandon Rios (International) USA
4 Jessie Vargas USA
5 Chris Algieri USA
6 Ray Robinson (NABO) USA
7 Bradley Skeete (WBO Europe) UK
8 Konstantin Ponomarev RUS
9 Shawn Porter USA
10 Jeff Horn (Oriental) AUST
RING Champion & Top 10 Welterweights:
Champion: Floyd Mayweather
1 Kell Brook
2 Manny Pacquiao
3 Amir Khan
4 Timothy Bradley
5 Keith Thurman
6 Shawn Porter
7 Marcos Maidana
8 Diego Chaves
9 Sadam Ali
10 Danny Garcia
IMO the RING rankings are the ones who provide a closer to reality Top 10 then any organization like IBF/WBA/WBC/WBO.