Well.. IMHO I see slow but tremendous power is moving directly toward uke.
This is how it feels when this is done: Power coming toward me, being uke. Not being able to enter. tori. But interestingly he is entering me. Suddenly it is him who moves me. Most often I am not even able to withdraw myself.
Interesting enough this "slow but tremendous power" is not hurting, is not hard, is not fighting. Not at all. Becouse this power enters into uke and takes over the control of his movements.