Tom,
I agree that Dwyer's letting his British biases show in Vol. 2. He treats the resignation of a few royalists like Chateaubriand after the execution of the Duc d'Enghien as a major blow to the Imperial regime, when most French nobles did remain loyal. And I get the sense in his descriptions of the Napoleonic military campaigns that he adheres to the Owen Connelly "Blundering to Glory" thesis, not giving N enough credit for his great victories 1805-7.
-Alex