Does incline slow down runners?

While slaving away on the KOM in NYC on the steepest sections of the hill a zwift runner jogged on by as if it was nothing. I’m guessing the incline doesn’t affect runners as it does cyclists? Once the route flattened out a bit I was able to overtake the runner, but it was kind of demoralizing while on the hill. Doesn’t the virtual environment alter the speed of the runner’s avatar too?

haha, yah, it’s terrible! go do the alpe du zwift, runners blast past you all the time!