Searching on CO.com for MIA-DXB, it shows 60k miles required (OW) for business class on *A partners but for VS the required mileage is 85k. When I click through it shows MIA-LHR in I class (Business) and LHR-DXB in G (Upper Class). This is the first time I've seen this so I'm a bit confused. Being that VS doesn't have a business and first class, shouldnt upper class be 60k like the regular *A business. And besides, first class should only be 75k so how for they get 85k?