To be honest with you guys even Might Gai can tie with aizen using 8 gates. I say tie because his power makes edo madara seem weak as fudge the only drawback is he would die. We have seen his 8th gate btw. It looks badass :3 wont spoil anymore xD.
But yea Madara is now on Rikudou Sennin level which means he can make his dreams reality and create the moon onhis DEATHBED as Rikudou had the same feats. Perhaps he may not have experience with these new abilities but his new Raw Power easily enables him to defeat ALL of the Gotei 13 or perhaps even all of the soul society including squad 0 and maybe even the soul king himself. These are the powers being displayed in Naruto.
Back to my point of how even Naruto would EASILY beat Aizen. Aizen isn't known for his destructive ability but on the other hand Naruto's current level of power can easily cut through a gigantic tree also known as the GOD tree or the Shinju which is about 10 times taller and wider than mountains (Approximate) Check out naruto 646 too see the chapter. What Aizen is good at his Kyoka Suigetsu abiity of Perfect Hypnosis which fools the opponent's 5 senses into them seeing illusions. But Naruto has a 6th sense which enables him to sense emotions of people. He doesn't need to see, hear, smell, touch or taste anything. He can still fight on par with Aizen at the least. Btw both Naruto and Madara can also NEGATE ninjutsu (same as kido imo). So any Bakudo or Hado would easily negated and stopped by the mighty truth seeker orbs. That is how he stopped the Minato regenerating who was brought back with the other past hokages by Orochimaru.
Madara >>>> Naruto = Sasuke (Manga FACT) >>>> Any known person in Bleach Universe except maybe Squad 0 and Soul King.
By the way the Madara I am talking about isn't an EDO tensei anymore. He is alive now. Otherwise he couldn't become the jinchuuriki of the juubi. But even if it was Edo Madara he would win due to having Infinite Chakra and just dropping a barrage of massive meteors (bigger than mountains) on himself and Aizen as he would just regenerate. His Perfect Susanno is capable of destroying entire Mountain ranges with one slash. Hashirama stated that when he and Madara fought this is when Madara was alive they would need to re-draw the maps. These feats prove far too great for any known person in Soul Society whose abilities are known. The only one with enough RAW power to compete with this is maybe Yamamoto who would also lose.
Current Madara >>>>>>>>>>>>>>>>Resurrected Madara >>> Edo Madara >>> Hashirama's time Madara >= Aizen.
This is the truth U.U