Session drummer 3: How do the samples compare?

Assuming all samples are recorded top quality (soft to hard hits) and by just comparing samples, what sets them apart would be how many samples are included.

** Velocity layers :

BFD 2 has up to 96 layers for each note.
Session Drummer 3 libraries from Platinum Samples, up to 16 layers.
Session Drummer 3 default libraries, from 2 (electronic) to 7 (acoustic) - could be more, that I've missed (from looking at the samples directory).

The more layers, the more responsive the sound may be. But also depends, if the midi data had max or fixed velocity, you may not hear much difference.

** Round robin (within the same velocity layer) :

To prevent machine gun effect, many libraries have multiple samples at the same velocity layer, and are cycled during playback.

** Raw / Processed samples

BFD 2 features raw and long samples where you can further customized the sounds or use presets with active processing (filter/eq/comp/etc..) making BFD more flexible.

Session Drummer 3 samples are already processed.