As far as i know... Strongest uchiha means strongest sharingan user lol.
Well that's wrong. Madara's the strongest uchiha because of his superb skills in ninjutsu and taijutsu. Then, this was further increased by him being the first and only uchiha to acquire an EMS and the perks that came with it.
Anyway your entire argument is killed by the fact that young madara was killing adults before unlocking the sharingan. That already kills the whole strong uchiha = strong sharingan nonsense. This is exactly why people believe itachi needs his MS for every fight. It's like this manga is soooo hard to understand :|
Exactly a sharingan is a sharingan, Madara is the greatest Uchiha. He uses it with the greatest ability, so you just went against what you said originally.
wtf? That doesn't even make sense. Madara's the greatest uchiha because he's just plain out the strongest. What, his sharingan is what gave him great fire annihilation? His superb taijutsu skills? His war fan? are you a moron, or are you just pretending to be one?
Controlling a beast revolves around genjutsu hypnotism. It's based on how well of a genjutsu user the caster is. All sharingan's give the same shit, but it's up to the individual to refine skills not granted by the sharingan, or use the sharingan to boost their own abilities. Since you're stupid, I'll dumb it down. If you're shit at genjutsu, you only have the fodder basic genjutsu provided by sharingan. If you've trained heavily in genjutsu, you get your genjutsu skills + a boost from the genjutsu provided by the sharingan.
TL;DR; All sharingan's give the same basic shit. Madara's the strongest uchiha because
he's trained all his life in wars to be the best alongside his brother. Then, he took that brother's eye( therefore power ) to become almost twice as strong. It has nothing to do with sharingan. If you still can't understand after this point there's no hope for you.