Ki...IS.... power, Graham.
Soft power...IS...invasive and destructive as well.
this notion of soft meaning, externally leading or evading is WAZA not aiki.
Tohei good as he was...was not Ueshiba.
Is an apple better than an orange?Both are good. Personally I find drawing comparisons between anyone is not so good.Tohei Sensei [no doubt about it ] was a great Aikidoka.
In my view there is no need to compare him with anyone.