wax does protect from uv because thats its purpose from the palm it comes from, the carnauba palm releases wax from within the plant and coats its leaves in the wax to protect the plant from the sun and rain etc, sealants are man made ie synthetic. jetseal is a great product, tar spots will stick to anything due to the nature of it being oily/sticky, putting jetseal on a car doesnt ensure easy removel by any means but it does ensure it doesnt come into contact with the paint because of the barrier it produces when applyed.
jetseal 109 is one of the top sealants in the industry and has been for years, new sealants are coming out all the time,some good and some not so good, jetseal still out-performs many sealants and is one of the easiest to apply/buff off. its very good for wheels too.