Clear Bra vs PPF – are they actually the same thing or just marketing talk?

I've been deep into research mode for weeks trying to decide if I should get paint protection film for my new car, and one thing that's been confusing me is the terminology – some people call it "clear bra," some call it "PPF," and I can't tell if they're talking about the same product or if there's actually a difference I need to understand before I commit. I know the older leather and vinyl bras used to be popular in the '90s and early 2000s, but they actually damaged the paint through constant contact and vibration, so I'm definitely not interested in those. From what I've read, the term "clear bra" stuck as a nickname for PPF because the film is transparent and wraps around the front of the car like a protective layer, and it seems like they're essentially the same thing nowadays, both made from thermoplastic urethane designed to protect against stone chips, scratches, and road debris. The newer films even have self-healing properties where minor scratches disappear when exposed to heat, which is a huge upgrade over the older clear bras that would yellow and crack after a few years. I found a page at paintprotectionfilm.ae/car-clear-bra-vs-ppf that breaks down the differences, but honestly it just confirmed that the terms are used interchangeably now and the real difference is in the quality of the material and installation, not the name itself. Has anyone here actually had both older clear bra and modern PPF installed on their cars, and can tell me whether the newer stuff is really as much of an improvement as the marketing claims make it out to be? I'm particularly keen to know if the self-healing actually works in practice and whether the modern films genuinely resist yellowing better in our intense sun. Any honest feedback from people who've lived with either option would be massively helpful.