An Absolute is the most potent form, regardless of the solvent used to make it.
An Absolute is made using a non polar solvent to avoid picking up non active water solubles and chlorophyll, and then winterized with a polar solvent to remove the non polar inactive waxes. For all practical purposes, all that remains are the cannabinoids and the other terpenes.
Both dry sieve and bubble, regardless of how pure and pristine, still contain inactive cellulose and plant waxes.