This. ^ Also, Tobi being the same age as Kakashi makes him the same age as Zabuza (Zabuza was 26 in part 1). Zabuza graduated from the Academy at the age 9 when the Village of The Blood Mist occurred, and that's when Yagura was in charge. How in the blue hell does Obito at age 9 infiltrate Kirigakure, confront a Kage who is a Jinchuuriki, and put him under a genjutsu when he hadn't even unlocked his Sharingan yet? And before you say they're not the same, they are. Kisame saw Obitos face back then when he had long hair, and just recently with short hair.
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