I don't know 100% that they are authentic, but then again I don't know 100% that eBay is being always truthful about what's authentic or not.  Hence the query about finding an authenticator that is better aligned with eBay (that would make calls similar to eBay's whether or not they are 100% correct)

The major point is about finding a better authenticator which I believe we can all agree is a good thing.