The strength gap between Roger - Rayleigh - Gaban will be the same as in most crews we have seen. Even going by legends one outshines the others by far.
You know, you could compare them to Chicago Bulls legendary team.
Michael Jordan = Roger (GOAT)
Scottie Pippen = Rayleigh (greatest No 2)
Dennis Rodman = Gaban (greatest defender)
All of them are legends in their own right. In that respect they are somewhat on a equal level.
Rodman is seen as one of the greatest defenders of all time. I think he still holds some records.
Pippen is seen as one of the greatest No 2 (Robin to Batman) of all time. He actually led the team and came close to winning when Jordan retired.
Jordan is seen by many as the GOAT but there are a few challengers before his time (Wilt, Kareem) and after (Kobe, LeBron).
But in the end there is a difference in overall level.