How Long and What Teaching?
Ueshiba: 1915-1919 and he started teaching. Was being regarded as strong. He only got better. Never any long time frames of training with Takeda.
Tomiki: 1925-1936 and he started teaching ... in Manchuria.
Shioda: 1932-1937 and then sent to China. Supposedly trained on and off for about ten years.
Why did it take them so few years to become good? Tomiki had a background before he met Ueshiba and it did him no good. Ueshiba had a background when he met Takeda and it did him no good. If those backgrounds were so solid that they "helped" them get better, why was it that every one of them (Ueshiba meeting Takeda, Tomiki meeting Ueshiba, well, everyone meeting Takeda and everyone meeting Ueshiba) was tossed like a rag doll and treated as if they were children in the hands of a parent? Their prior training counted for nothing. Their prior training could do nothing to stop or counter anything.
So, Ueshiba, with all his prior "training" gets manhandled. But then goes on in less than ten years to become someone who manhandles. Tomiki with all his prior training gets tossed about effortlessly like a rag doll some 63 different ways but then in very little time starts tossing judoka around.
And then we get to Kisshomaru and Tohei ... Where are their students who turned the budo world upside down? Tossed men as ragdolls? Took on anyone and showed the merit of Aikido?
Who taught what?