Power clipping at 1200 Watts. Is 1200W a Zwift imposed limit?

I have seen many people at the top sprint segment leader boards maxing out at 1200W. When you check out analysis of the segment, the power is starting some where below 1200W, the line disappears above 1200W then reappears further down the segment. It’s impossible that everyone is maxing 1200W on a sprint. There are plenty of riders on Zwift capable of doing well over 1200 Watts.

e.g.Monument Ave Sprint - Line to Arch (Richmond course)

Is there a Zwift employee that can answer this?

For those without a power meter or smart trainer, 1200w is the cap.