its not faded thats why it worked for you,you cant bring faded paint back by using a filler.you need to cut the top coat to get the gloss back.srp doesnt remove swirls,its fills them.the swirls are still there. ill explain it in lady terms,srp is like make up,it will hide the cracks and make a woman look better,but under the make up theres still bad skin.where as real polishes are like botox,they remove the cracks/lines.
srp gets it results by hand because its a filler,it if was a dedicated polish you could never get enough heat or work it enough to get the abrasives to remove anything more than water marks.its not got the cutting ability.id rather use blackhole than srp as its easier to work with.