The "old" demos are not very progressive at all. Not in comparison to most newer DH bikes. In the 10% rage IIRC from sag to bottom out. DHX never performed well on mine, even with bottom out cranked. Without significant progressivity in the linkage, you are going to have to choose between good midstroke suppleness and bottom out control.
Sucks, but it is what it is.
Sucks, but it is what it is.