hi spec.check, a pure polish is used to deepen the car's colour. however, it has no cleaning or protecting properties. pure polishes like meguiar's show car glaze is said to contain special blend of oil and chemicals to make the paint look wet and deep.
a wax is a protective layer that is applied as the final step in a car polishing process. there are some containing natural carnuaba wax, and there are some that are polymer sealant.
the cx, i dunno about soft99 white, i have not used it before. :P i have used the liquid soft 99 in a blue bottle before, dun like it. hehe.