They said that the formulation for Klasse is different than CL68. The US version has other silicones, and bigger abrasive size, but in effect the two products are 95% the same.
As with clay, there are two or three manufacturers of quality acrylic AIOs and sealants and they serve a wide spectrum of brands. I was told by CL that they consider one brand as a major competitor, and its acrylic, called R71. You won't find it as is, because it is only the name of the formula, and the other manufacturer sells it through numerous brand names. The two products (CL & R71) are very similar, qualitatively on par with each other, however the CL has better protective abilities. But even then the difference is minor.
There is a certain recognizable pattern in the product ranges though. Basically 1 AIO, 1 long life sealant, a plastic cleaner, a wheel cleaner and a shampoo. When you have bottles from the different brands, even the wording is absolutely the same. I was importing similar sealants from Germany in 1993 (they were called McTexcon Syntex, Polytex and Color Gloss with the other products I mentioned), and from that time I am aware of these kind of issues. The three products performed absolutely the same, but only Polytex was water soluble and dilutable. They have excellent shelf life, because I still have several bottles of Color Gloss and they are perfectly fine. That brand does not exist any more, but they sell the same products under the MacBrite name. The performance of these products virtually the same, and often indistinguishable for even for the most trained eye. So from a practical standpoint it is no matter what you will use. It can be SK Formula 1, Wellpro, B2000, Grojet, Klasse, Jeff's Werkstatt, Car-Lack, ShoKar, Number One, MacBrite or whatever. I conducted blind tests with painters & detailers, and I poured a bottle of Syntex in three different bottles saying them that by doing a thorough test, they have to find the best product out of the three. Needless to say, they have found the best one each and every time, they have found always a different bottle and they have seen differences...
R71 or Car-Lack? They are positioned so closely together, that the final results are basically the same. The significant difference can be the durability, in which Car-Lack has a definite lead. And they saying: "Unser Produkt Car-Lack Long Life entspricht dem Klasse Sealant Glaze, ist diesem jedoch qualitativ überlegen." (Our product CLLL is equal to Klasse Sealant Glaze, but qualitatively better.) And this sentence can be a bit shady in German, because the exact meaning depends on the emphasis. Do they emphasize the brand/product names?
Edited: more exact meaning of the word 'entsprechen'.
However, if you have worked with different waxes; heavy carnaubas, thin liquid sealants, etc., they have a different feel to them. Smoothness aside, some of them feels thicker, some thinner. And while we don't have appropriate words to describe them exactly...