Looking at the videos, the sword lady appears to hit her max turning radius - she could go in tighter circles but doesn’t. The unreal guy doesn’t appear to hit that “pegged” max, and instead jitters near the top.
In the running videos, the UE4 guy definitely appears massless. Whatever force is turning him is massive and instant acceleration. The sword lady has a bit more of a ship to steer, which shows off her animations (tassle on her sword, etc).
I wish I could be more help 