What makes “ West Country Farmhouse Cheddar” different from "West Country Farmhouse Grana Padano"? By the logic that leads to WCFC, Grana Padano shouldn't be p

What makes “ West Country Farmhouse Cheddar” different from "West Country Farmhouse Grana Padano"? By the logic that leads to WCFC, Grana Padano shouldn't be protected. Only "Piacenza Grana Padano" should be. It is an identical situation: a method of making cheese, with an origin in a specific area. I can make cheese the same way, using the same ingredients for both cheeses, but one I can call cheddar, and the other I have to call "Not Grana Padano".