I'd agree with that. Some of the instruments have 6 or so layers (bass drums...), others (big cinematic hits etc.) not as much. Little expertise on this kind of stuff though, others should have better info for you, just threw that in here since I was using it the other day...
I just installed Drum Fury, and it does respond quite nicely to lower dynamic playing. But, I think the main focus with some of the epic sounds is the mid-high level dynamics, since that's their forte.
Here is a fast noodle I did using one of the Toms ensemble patches, played in real time with various dynamics.
I will post more feedback on my experience with this library.