Samsung has won my loyalty. My experience with their products are far better than any HTC products. Just my personal experience. With both phones being so similar, that customer loyalty makes the S4 the winner by a long shot in my book.
Also, not trying to start a flame war but what is actually better than the S4 does the One offer? Aluminum build, better low light pictures, better speaker. Nothing that important on my list. There's not much else that has stuck out to me that makes the One significantly better than the S4 while reading articles. They're still fairly even in my book.