Dude I'm very disappointed with you. One you called Hiraishin a hax and completely ignored the fact that I also mentioned Rasengan and Shiki Fujin. The latter of which was the only thing the "great" third could do to even hinder Orochimaru.
Then you say the old man who couldn't even beat Oro would have been able to defeat Madara, pure BS.
Then you talk about you consider Kakashi more of a genius that Itachi because he became a chuunin etc before Itachi. Kakashi graduated at about age 5 and became a chuunin at age 6, Itachi graduated at 7 and became a chuunin at ten, they joined the anbu at around the same age. Now the reason I think your reasoning is flawed here is because a few years especially when they are that young doesn't really mean anything and Itachi has already clearly surpassed Kakashi. Secondly what age you achieve your accomplishments doesn't matter, its how far you go look at Kakashi he started early and he peaked early. Its about potential and when you talk about potential Kakashi isn't even in Itachi's league. I suppose you think Kakashi was more of a genius than someone like Orochimaru too then.
About the sharingan so you discredit all of Itachi accomplishments because he had the sharingan, so it doesn't count because he had natural gifts that gave him an advantage over everyone. That doesn't make any sense he had natural gifts, talents and abilities you can't take anything away from him because one of them happened to be a bloodline limit. So Neji isn't talented because he had a bloodline limit right, or someone like Shikamaru who though you may dispute it his talents, and his intelligence are also natural and are a result of his "bloodline." If so you should take away from Kakashi's accomplishments too because he is the son of The White Fang, a ninja who was on the level of the sannin and who for the early part of Kakashi's life trained him personally. If not for him not only would Kakashi not be as talented as he is because his talent too comes from his "bloodline" but he wouldn't have had his accomplishments so young if he wasn't trained since birth by someone who essentially was a sannin.
Now we come to Sasuke he activated his Sharingan when he was twelve, Obito when he was thirteen not much difference there and the fact that he had only one tomoe in one eye at that point doesn't matter because almost immediately afterwards he was 2-2 as you put it. Then you go on to say that Sasuke came as far as he did because of Orochimaru's teachings and the sharingan not because of innate genius. Well how could he have learned and progressed so much if not for some innate genius. IF you take the time to think about it the reason Naruto was not able to progress much during the time skip was because he has no innate genius or talent and you certainly won't be able to learn, master or excel at anything like Sasuke did if you have no talent for it. How about the fact that Sasuke was the number one ninja from his graduating class and was obviously above all the other rookies even though at that point he didn't have the sharingan.
Its funny that you disregard Sasuke and Itachi because they have the sharingan yet you think so highly of Kakashi who if not for the sharingan would be just an average level ninja. Certainly without the sharingan he wouldn't be the leaf's number one ninja and he would be completely useless against Akatsuki. He most certainly won't have the copy ninja moniker without it.
Oh and if you are talking about people being as strong as they are solely because of who taught them, I know I already mentioned Kakashi and his dad but what about the third hokage who you regard so highly. He was trained by not one but two hokages, one of which happened to be the founder of the leaf village.
The reason I didn't put some people on the list like Kakashi's dad, or the second hokage for that matter was because we have seen and or know very little/absolutely nothing about them.
As for your "proof" if you're idiotic enough to believe that the third became hokage at that point when he was about I would say 12 then you are a complete idiot. Things that disprove this, one the fourth was said to be the youngest hokage, no way a 12 year old was the hokage, if he did become hokage then and the first was obviously still alive at that point then when did the second ever reign as hokage. Since the third died when he was 69 you're saying that he was hokage for a span of 57 years not including the fourth's reign. The faces of the hokage on the mountain alone disprove this since you would think that the faces would be carved into the mountain soon after a new kage is appointed. It happened sometime within the 2.5 years since Tsunade became hokage yet the third is obviously in his late 30's or early 40's there.
Another reason why that is wrong is because the third wasn't the hokage when he was the teacher of the sannin, the hokage has many responsibilities and certainly the hokage doesn't have the time to be teaching their own teams. Take team seven for example Kakashi only got his own team of genin to teach after he left the anbu because at that point he had no other responsibilities beyond completing the missions he was assigned. The third became hokage after he taught the sannin because after he became hokage he had immediately decided that Oro would be his eventual succesor at that point Oro was still "good." Yet another reason why that is wrong is because of Danzou. Danzou was supposed to have competed against Sarutobi for the position of hokage and based on his appearance I would say he is either in his late 50's or early to mid 60's so he would be even younger than the third.
You know why its crazy because its wrong, the text could have simply been wrong or it was obviously intended to show that at that point they began training the third to become the future hokage.