So you are talking just levels and not crossover, got it. In theory if the system is balanced for one format it should be balanced for both. I understand the differences in soundtracks but I’d think it would be more a function of the mix then the format (DD vs DTS) used.

Just out of curiosity where do you have your center mounted? I’ve also read fairly convincing arguments that timbre matched centers are not necessarily a good thing due to the nature of center channel movie soundtrack content. I know that when I send test tones to my center and mains it is of slightly different timbre.

Having said all that you are correct some soundtracks are just have plain mixed poorly.