There are many car-chemical manufacturers in America, who custom blend car-care products under different names.
If you've been around on this forum for some time, there was a HUGE "discussion" (IE, flaming) on this very issue, ending in the moderators closing down the posts. It was not a pretty site (not pun intended), but it did make for "interesting" reading. Seems to me it was between Duragloss and Zaino (cannot remember the specifics) or Zaino's carwash soap and Dawn dish soap. (Don't even go there!!)
Since I am not privy to who makes what this-or-that product for whom, nor would I want to guess because I am not a chemical expert, let's just say that IF that in your experience of car-care products one product you use from company ABC seems to be very similar to the one from company XYZ, but XYZ charges (a lot) more than ABC, YOU have to decide which one you will buy. Marketing aside, YOU know that companies can charge a premium for a product just by placing their Logo/Nameplate on a product with a special label, container, and packaging, but the contents are the same as a "lesser" brand. GMC and Ford both do this with cars between Cadillac and Chevy and Ford and Lincoln, respectively. It's called platform sharing, or as the bean-counters call it, economies of scale in marketing.
Let's just say, "buyer beware" and let it go at that. What is truth and what is fiction or hearsay, even within this forum, is still up to the reader to determine for themselves. Does it influence me in what I buy and what I use? ABSOLUTELY!! I greatly trust and respect the opinion and recommendations of "certain individuals" within forum, and I am sure those Autopians who read this forum with any regularity know who they are.