This couldn´t be further from the truth because Khamzat and khabib fans do not overlap it is like saying the right wing and left each overlap each other.
Khabib draws conservative family oriented fans who take good behaviour and code of conduct as great pillar of life both of Muslim, Christians and non muslims in Russia, Asia, in the caucasian region, Africa and in the west ppl who value good conduct tend to favor him.
Khamzat draws more street fans, ppl who like badassery, dominance and Meme´s as Khamzat himself is a walking meme. Khamzat became famous because memes and all his interviews generated memes like the phrase kill everybuddy brather etc etc.
However Khabib and Islam´s fanbases overlap