Oh I see what you meant. But your view is so broad, many characters become very important when you look at it that way.
just because it's an assumption doesn't mean it's not a logical one.....it's honestly hard comparing two different lives in two different periods of time
but in the end, Madara was the one who left the mark in history and will always be remembered
he was the first to awaken the MS, EMS, and 2nd to obtain the rinnegan....he awakened the ten tails, defeated the 5 kage, planned the capture of the bijuu and world war, and stole Hashi's DNA to enhance his abilities and prolong his life
his actions was what influenced the Obito and the Uchiha massacre, influencing Itachi's life, influencing Sasuke's life, influencing Naruto's life and Minato's death.......
idk how that doesn't make him the greatest Uchiha
He is obviously very intelligent to achieve all that
So now to another point, ok i guess.
First Itachi never wanted to be remembered, he didnt seek to leave a mark nor recognition.
Itachi beats Madara in everything Sharingan wise except obtaining EMS, which he did not wanted, and if you go by logical assumtions most of the people would agree EMS Itachi would beat the crap of EMS Madara. But Itachi wasnt power hungry like that.
The thread is about the greatest Uchiha not the strongest one, and strength and raw power is the only thing Madara has over Itachi.
Defeating the 5 kage in an a improved Edo condition with the Rin'negan and Mokuton, isnt a display of skill and greatness just power.
Madara and everyone would agree is a sore loser who refused to die to continue his own plan of hatred, using an a influenciable damaged Uchiha as his pawn. He is just a powerfull ghost from the past, he seeks greatness but he shall never achieve it.
Ok well here's an analogy that fits
Ceasar's rise to power was based off greed and glory, made sure to use everything to his advantage when taking over the senate....his army, bribes, barbarians, and keeping his distance from those who might betray him
He instead aimed to change Rome from a republic, having the voice of many, to him being in complete control
The senate and Brutus(even though they feared for their own positions) saw him as a tyrant and a usurper....taking away the voice of many and replacing it with one will
Yet who is known to be greater? Ceasar or Brutus?
Known to be greater doesnt mean it is. Known is subjective and the analogy is good because we both can agree the fact that Brutus was greater because of that information.