I'm going to say that more roll/less roll is misleading. You're actually talking about roll center and raising or lowering it. When you lower roll center it allows more weight to transfer and opposite for raising it. Effects vary depending on front rear and of course angle and length of the camber link.

I still like the hudy book for this stuff

http://www.teamxray.com/teamxray/sho...p?file_id=4461