Well IMHO this is a better treaty, however Parma at this point was already ruled by the house of Bourbon-Parma.
I agree with Vitruvius and the 1757 treaty of Versailles is a good arrangement. Austria gains Silesia and Parma and the former duke of Parma (from a cadet branch of the Spanish Bourbons) is compensated with the former Austrian Netherlands as a French client state.
I agree it seems like a better settlement. And while I think the Austrians and French may try to pursue the clauses of the '57 Treaty Direwolf22 has a point that the British are sure to object. So I think this Treaty is reasonable. The French may not agree but I'm not sure what else you could throw their way on top of the rest of their gains. Maybe just a slice of the Austrian Netherlands, Hainaut or Luxembourg perhaps. Then again even that might not be necessary.
I'm curious to see how the Josephine reforms play out in a much stronger Austria. The Bavarian Succession could also be interesting if the Elector still dies without children. There would be little opposition should Joseph still press for an exchange for the Netherlands. I look forward to seeing this continue.