The first does not make them good games. It just makes them a specific kind of games that review higher than other game genres.
The second is bad, as 13m gameplay trailer do not belong in game shows, but on Youtube. One or two is fine, if your whole show is just that, it's a bad show.
The third is just wrong, as Sony has as many delays or games that get cancelled as any other publisher on their shows.
My point still stands. Sony shows get rated 10/10 from fanboys, while being a real 5/10 or 7/10, if someone is into those games, while the same people rate other shows 1/10