I don't think you are asking the right question.
Any "control" of a hub motor will be a function of the rebound damping for unsprung weight, not so much the compression damping and bicycle shocks are not designed the deal w/ the extra weight of the motor in rebound.
Having said that, I would think a name brand like Fox or Roxshox would offer more rebound adjustment than a KS or DNM, so it becomes more a matter of what do you want to spend for something that may, or may not be so noticeable on a street Ebike.
Whatever the dynamics at work, the Fox and Rockshox units that come on the higher end mountain bikes I have used have worked remarkably well in conjunction with my 2 Kg. to 5 Kg. motors. They are easy to adjust, have been reliable and deffinately take the sting out of hard hits. But they have all been air shocks, so I can't really make a direct comparison of air to spring.
But I can when it comes to dirt bikes and my opinion is at the lower cost range, the air shocks feel more progressive and controlled. The spring units feel more bouncy unless lot's of rebound is dialed in, and that starts to hurt overall performance. I suspect as one goes higher in quality, the difference becomes less.
Somaybe the the question could be framed, "Are the name brands, worth spending the extra $$ over the Chinese brands?"
I would think, that if the Chinese units will work without the seals leaking, the difference would be sm. on a street ebike, hub motor or no hub motor.
Slow leaking when parked is, of course, the downside to air shocks. Even my new Rockshox needs to be pumped up a bit if it has sat overnight. Out of the several units I have had, only one Fox Float R didn't leak while sitting. In general, this is NBD, I just top off the shock while topping off the batt. And since I'm going to give my legs a workout, I might as well give my arms one too