Not true, my 48V e-Lightning outputs max 600 watts. Per Take E app display on my phone.
It will go 28 mph with 150 watt rider output. For over 20 miles.
Here is a real commuter, designed for US auto centric cities, and e bike weight and speeds.
Same 50 pound weight.
Half the stopping distance, no flip.
Feet flat stop and start, no falling over.
Increased human power and comfort.
45 miles range at 20 mph average in actual city commuting...