Neither you, nor anyone else can "substantiate" anything other than that.
I'm not about to repeat myself that your asking others to prove the negative is a fatuous debate tactic. Let's leave it at "moot", shall we? For some reason, Ueshiba's ki skills seem to be much more "relaxed" than anything I get the impression that DR does. That's enough of a question in itself (although I'm not going to be silly and tell you that unless you can disprove it, I'm correct).