What is more important to you when it comes to creams and soaps - slickness or cushioning? Or are they equally important? Please cast your vote.
I have never managed to grasp the whole cushion concept, and so have no idea what it means or how it works for one's benefit; so I go for slickness.
Some people seem to define cushion as some kind of protection provided by the lather against the blade cutting the skin... but I find this hard to accept, given that the blade is immensely sharp and coated to reduce fraction, and can without effort cut through very tough and hard whiskers. I don't see how any film of soap-and-water could prevent it from doing anything if the blade angle is wrong. That is, it will go through the film like a hot knife through butter.
Slickness is the most important. It your lather is too thick you will have a harder time getting a close shave. YMMV
+1. I don't see how "cushion" can even be relevant to shaving where the "business" occurs, right where the blade is cutting. The blade is in contact with the skin, and it's pushing the lather out of the way as it does so. The only thing that remains is a tiny little layer of lather, and slickness seems to be the only relevant factor there.