I find it hard to keep it at 24 or 25 mph unless slight down hill, I don’t with my Trek with Bosch on the same path. It is a comfy ride though just not as fast as others. the Trek has a chain this is the auto hub , not quite apples to apples. The power below this seems to be there just too hard to pedal at higher speed.
My experience yours may be different
My experience yours may be different