Well we need our resident 166 driver to comment but I would say about right. Put it this way, I was stopping from 800 yards from 60 MPH using a combination of Step 1 and Step 2. Step 3 is "full service" and in the world of the real railway, when we sent Class 158's out for a brake test after a report of poor brakes, they were required to stop in around 800 yards from 75 MPH in Step 3 to pass. So if anything the 166 is on the right side of that. And yes there are only three steps to the brake on Sprinter/Turbo traction - plus emergency which in practice is simply an immediate Step 3 application. We have become too conditioned in these sims to trains which stop as if they had car brakes when the reality is not the case. Also unlike some European trains, no UK rolling stock is fitted with magnetic track brakes either (apart maybe for some tram or light rail vehicles).