Did you know that Oracle forbids "unauthorized benchmarks" for any users of its database products? It's curious that a database with such amazing performance characteristics would not allow third party benchmarks against other products.
Call me stupid all you want, but I was looking for a clause that prohibited running unauthorized benchmarks, and neither my nor your search results corroborate that.
I was at an AWS Aurora talk and someone asked the presenter (VP of DB engines) if there is a benchmark comparing Aurora to Oracle and he said that they are unable to do it because of licensing agreements.