Tobi not Madara uchiha
Tobi is Madara Uchiha.
and Nagato was leading the akatsuki for the most part.
He gave the commands, he wasn't the leader, Madara didn't interfere because the commands Nagato gave were the same commands he would give.
If you missed it
through logical thinking
Doujutsu + Body > just doujutsu
Itachi has more than Doujutsu, he has legendary Yata Mirror and Totsuka Sword which CRUSHED Nagato (manga fact), he has superior speed, nagato can't even keep up with Itachi's speed (manga fact), he outsmarts and outplays Nagato and he is ON ANOTHER WHOLE LEVEL THAN NAGATO (manga fact).
Truth hurths huh?
There is a reason for why Kishi decided to show Nagato vs killer B, Naruto and Itachi.
Yep, If Itachi wasn't there Nagato would have win, Naruto and Bee didn't contribute shit to the battle, Itachi did all the work. He chose that battle because Nagato fanboys were getting out of control, he made Nagato say that he is GARBAGE, that he is a FAILURE, LOL, thanks Kishi.
And I ask you this, how will Itachi stop Gedo Mazo with the powers of 7 tailed beast? I mean if all else fails for Nagato he can summon the gedo Mazo.
Yata Mirror and Sword of Totsuka, These are the only reason I am defending Itachi so much, people are failing to comprehend that aslong Itachi has these two legendary items he is (nearly) Invincible, Nagato is outclassed.
The only chance Itachi has is to seal him with the blade quickly because Itachi does not have the stamina to go toe to toe with Nagato.
I agree, that is why that happend in the manga, Itachi is smart enough to not prolong the battle, he won based on his intelligence, speed and shinobi skills, not on his power. Nagato has more power than Itachi, but power alone doesn't decide the outcome of a battle as demonstrated in the manga. Itachi is the better shinobi, that is why he won.