Arm sells barebones CPU cores which can be used to create more complex processors like complete SoCs. When I mean barebones, I mean the traditional core with branch predictors, instruction fetchers, writebacks, etc.

Intel and AMD sell an entire System-on-a-Chip disguised as a CPU processor. Their CPU is much more than a CPU core: they contain an entire system in there.

If you want to make a comparison, it is more correct to compare the Snapdragon and the Exynos chips to the off-the-shelves CPUs that Intel and AMD sell.

Arm only sells technologies that enable other companies to create a final product, it doesn't impose those kind of "management systems" and binary blobs.