dollar租车与avis租车保险的问题

我对比了一下，请问dollar里面的条款包括：Unlimited Mileage, Loss/Collision Damage Waiver, Supplemental Liability Insurance, Uninsured Motorist Protection, All Taxes and Airport and Local Fees, GPS Satellite Navigation
avis里面包含的是LDW/ALI/GPS/税
请问，ALI与Supplemental Liability Insurance是一样的险种吗？