I think the pipeline of Gordon, Davies and Barkley is about par for a club like us... but it's really difficult to say.
Think its easier to say which clubs are doing it better than us, then look at what competition and catchment they have for youth recruitment, then maybe you can start thinking about whether their recruitment or their training is better than ours.
It's really easy to say youth training at Everton is rubbish, but I think, as others have suggested the problem is more continuing players development between 18-21 via loans then selling the players (or integrating them) that has been the problem at Everton.