With the front suspension, because it's a McPherson strut, when you lower the ride height you are lowering not just the centre of gravity but also the roll centre (the theoretical point about which the car rotates). The difference between roll centre and c of g, not the height of c of g itself, is what causes body roll.
This is why Steeda developed X2 balljoints to use on lowered Fox cars and why they now have them for the 05. They correct the angle of the Lower Control Arm, which is what dictates the location of roll centre.
If you want more details including free-body diagrams etc I can dig the links up.