Well, Napoleon's empire and his satellites were born out of the French Revolution and presumably in his first years in power as First Consul, before he became emperor, he might have well retained some of the revolutionary rhetoric. (Did he actually? It'd be a good technical follow-up question).
However, once he became emperor, Napoleon didn't seem to have much use for revolutionary language or ideas. As you correctly point out, he was an absolute monarch himself and did not seek on principle to dethrone other absolute monarchs; instead he married the daughter of the Austrian Emperor. So I am a bit hard-pressed to recall examples where Napoleon or his minions claimed that "they were revolutionary forces fighting a revolutionary wars" - what did you have in mind?
Another telling example (for which, alas, I do not have a reference at the moment) is that Napoleon did not even conceive of offering Russian serfs freedom when he invaded Russian - arguably the only political move that could have allowed him to achieve victory (of course, actually winning his battles there also could have helped....).