Or, at the very least, there is a difference! I finally used up my Armorall soap, which I thought did just fine. I bought a bottle of Soft Wash Gel. It definitely felt more slippery on the paint, which was nice! I don't know if that matters for cleaning (it didn't clean any better than Armorall, which already did a good job), but the slipperiness seemed to make things go easier. I was surprised I noticed the difference -- I went with the Soft Wash Gel just b/c I wanted to stay in the Meg's line.
Plus, I really like the bubble-gummy smell.