The wing on the Prolog is a little bit further back and it has far less sweep with the wing tips being more forward than the Nuance. The trailing edge on the Nuance is close to straight.
The Prolog flies a bit more stable while the Nuance probably rolls a little easier and snaps a tad better.
The Prolog is very nuetral and tracks fantastic. It's super easy to groove with.
The Nuance is better with snaps but not a lot.
That's what I think I know. Thanks, Mike Mueller