Well, goodness me - I'm sure if you did the maths and scaled that RC model up you'd find the scale speed was closer to 100 knots than 40! Should be easy enough for the mathematically minded to calculate as it's just about possible to time how quickly that model covers it's own length, and we know that's a scale 963 feet...
As to the real thing listing while turning; it sure did - I remember being on the higher deck at the stern, looking down on the two jacuzzi tubs, and the water slopped over the sides of them for about 3 - 4 minutes during a turn.