DAN.2000,

Hmmm ... not that easy. Drum1 is a Midi track - notes are interpreted via midinotes that translate to the notes on the keyboard (in the order in which they were recorded - so you could have say C2-kick, then F3-conga ... no particular order.
Drum2 (for the most part) plays linerly - the wave loop is broken from left to right accross the keyboard so during playback it is not done in a random order but also from left to right (just as the wave file was broken up over the board).

AJ