Who's the better writer now?

Stephen King believes that most writers remember the first book they put down thinking "I can do better than this."

I'm sure most of us have read some of those cruddy books that leave you the sense that you can be a better writer than the writer himself, and I'm not talking about Dr.Seuss. For me, for an example, that book would be Misery by Stephen King himself. Though it isn't cruddy whatsoever, it did leave me feeling like I could be a better writer than the King himself. In my opinion, he didn't reach a greater depth to the psychotic values dwelling within the Antagonist's mind, which can be inferred but I would have rather it have been explained through some witty literary terms (which I would've done if it had been my book). Though I didn't do it, after reading that book I was already on the verge of rewriting Misery in my version because of how vexed I was that the reader didn't truly know the antagonist. King could've done better.