Every fan will overrate their own players. People will do it on here. You'll get United fans claiming that Rooney is the best striker in the world, or Arsenal fans claiming Van Persie is the best striker in the world. In reality they aren't, but to them, they are.
And to me, Lee Camp is the best keeper in the world. It's my opinion. I'm allowed an opinion, and that's what it is. He may be in a lower league, and not on Motd, but why would I want to say Casillas is the best in the world? He isn't the best to me. I don't support him, I don't watch him week in week out therefore I've got no vested interest in saying he's the best.
James' love for Fryatt and Liams love for Berbatov is the same. Realistically, we know they aren't the best in the world, but to us, they are.
So whenever someone says Rooney is the best striker in the world, it is the same as my Lee Camp claim.