Madara would be much better at controlling the Juubi than Obito because his ocular powers are far superior. Madara right now poses a bigger threat than Obito does.
Your arguments are so invalid. You're using Mada's power as an argument. An antagonist does NOT have to be powerful to be a main antagonist. And then, to your other comment, "Madara's reasons for being a villain is justifiable." No. Just no.
A good bad guy in a story is SUPPOSED to be unjustifiable. His actions, his motives, his reasons. They are ALL supposed to be unjustifiable.
The key to making a good villain is to make his motives unjustifiable, and to make the majority of the audience hate him. Kishi did that wonderfully. Madara just seems like an average antagonist, with nothing really special about him besides his abilities, which shouldn't even be mentioned, because like I said before, the main antagonist does not have to be a powerhouse. Madara just seems to be a one-dimensional character, who's level of complexity as a character is nowhere near Obito's. Kishi WORKED HARD on Obito. He added character depth, great character development, and he made everyone hate him. THAT'S a good antagonist.
We've seen multiple sides of Obito. We haven't seen even two of Madara, because he's just so simple. Having a simple character like that become a main antagonist? Bad storytelling.
