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This is what you'd get without those oxidation layers, which is a common problem in metalness workflows, and is the result of strictly sticking to 0 or 1 metal values. It's also wrong, which is why you should be using grey values in your metal maps.

Idk if it's my eyes or the screen, but i cant tell the difference. Am i looking at the range of wear?

Here it is side by side in the same image. Left is with oxides filling in grey values, and right is just a rust to steel transition without the intermediate steps.

100%. Had to deal with that halo effect allot when converting dielectric workflows to PBR metallic

Yup! Transitions from metallic to non metallic are rarely ever binary unless you're dealing with something like chipped paint. But faded paint, dust, oils, oxidation, etc should all have grey transitional values