I would imagine that the British and Prussians would be in a weaker position, while Austrians would be in a stronger position. I think Russia got what they could get. But Austria may be able to force the Wittelsbach to accept losses in Bavaria against a stronger position in the Rhineland. The Dutch will likely get Belgium (no one wanted France to keep it, but neither was anyone willing to get and be neighbour to France), but also greater gain in the Rhineland. I could see the
Grand Duchy of the Lower Rhine being split between Netherlands and Palatinate, the first will make the British happy. While the latter will serve as part of the trade with Bavaria for losses in their homeland. Alsace may either go to Bavaria or be split between Bavaria and Baden. Austria take Bavarian Franconian, Salzburg and Oberpfalz (they would rather have the south, but are not willing to restart the war over it). Because Prussia do not gain the Lower Rhine, instead they keep their part from the second partition of Poland (Congress Poland become slightly smaller). The HRE is reestablish under a Austrian emperor.