I get the limiting to 15.5mph however can a 250W motor with no limiting on controller really provide enough torque to get a bike+rider up to 22mph never mind 30mph and maintain that speed not at peak current draw? What about hills....?You confuse 250W rated power limit with speed limit. At this moment you can buy perfectly legal 250W e-bike capable to ride at 20-30mph. It is 15.5mph limit that restricts maximum assisted
Only really ever ridden my own ebike so have little to compare against.