Motorcraft 5w-20 is an excellent oil made by Conoco/Phillips, and I don't think I've ever seen a bad UOA for it. However, because of the Motorcraft/Ford relationship, I don't know if they would actually pay for the the testing to list other car manufacturer's certifications on their oil.
I have no doubt that it would be able to pass the MS-6395 requirements because Conoco/Phillips oils are very similar to one another, and Motorcraft is very similar to Trop Artic and 76 Super (both Conoco Phillips oils), and both of those meet the MS-6395 requirements. In fact, the oils are so similar, you can probably find Trop Artic or 76 Super oil near you for less than Motorcraft, and that way you're basically using the oil you want (Motorcraft), but using oils that meet the manufacturer's requirements.
Though technically they are not saying that you *have* to use MS-6395 oil. They just *recommend* that you do. It's up to you to decide if you want to fight that battle if it ever becomes an issue.