And once you are up to speed, you coast. Even on a normal bike. With the battery as a buffer, the ebike could easily bump you up to speed and use 250W or more f

And once you are up to speed, you coast. Even on a normal bike. With the battery as a buffer, the ebike could easily bump you up to speed and use 250W or more for just a little while and then 0W for stretches. You don't need to sustain 250W pedalling.