Didnt mean to be glib.
Exactly the difference is that Yoshi is relegated to a shrine in Japan, that only a Japanophile would know of , and Ueshiba amongst others(see Chinese, Indian martial masters) have something that has reached around the world several times. Whatever Yoshi had is in that shrine with him.
It is also in anybody who trains a Kashima-oriented tradition. Who might that list inlude? Hmm...