Since your the only one who actually read my post and have a logical argument, your the only one I'll respond to.The arguments sound good when read as an essay but I doubt it's actually practical. I'm not saying that he doesn't have good counters to some of the Uchiha's techniques, but most ninja are creative by nature. When A's fighting an elite clan with several amazing shinobi in its ranks, he'll definitely be facing tricks and surprises one way or another (see how Itachi tricked Kabuto with a crow clone twice). I actually do think that he should be able to take most 3-tomoe Uchiha, and perhaps some of the other MS users. Madara is far too much for him though, and Sasuke was already a trouble for him before he was buffed up stamina and ability-wise. Itachi's intelligence should also be considered.
Dude, itachi can have an intellect of a zillion, but if A is too fast for him. Even if he attacks and missed or itachi used crowd A is is still too fast to counter attack against.
As for everyone saying madara, we don't know if the meteors are a product of hashis power in him. No one has seen him fight with no borrowed abilities.