George S. Ledyard
To have the kind of power that Dan. Mike, or Ark can display, you have to do quite a lot of conditioning of the structure. To do what Ikeda Sensei is doing does not require doing a lot of solo conditioning work. It would only help but it is not strictly necessary.
i don't think this is the case. the mind-body conditioning to be able to release power (fajin) like the IP/IS folks is the same as be able to manipulate (aiki/huajin) other folks' power like what Ikeda sensei shown. it's a matter of usage. the conditioning is the same.
from my point of view, what Ikeda sensei shown were a bunch of sentences to demonstrate a language. whereas, the IP/IS folks shown the alphabet, vocabulary and the grammar rules to construct sentences and paragraphs. once you have that, you can write essays in any style (karate, judo, kungfu, aikido, ...etc) you want.