From a very short comparison listening session, the things that stood out between the Maestro and the Scala are: (i) punchier, tauter bass of the Maestro, (ii) more transparent midrange of the Maestro and (iii) removal of the last semblance of warmth by the Maestro.
If you have the space, the Maestro is clearly the superior speaker to the Scala; unfortunately, I don't currently have the space or I would probably own the Maestro.
If you have the space, the Maestro is clearly the superior speaker to the Scala; unfortunately, I don't currently have the space or I would probably own the Maestro.