The point is that the iPhone is technically utter garbage compared to even the cheapest low-end DSLR. Zoom into 100% on any iPhone picture and you're going to see nothing but compression artifacts with whatever remains blurred by pocket lint on the microscopically small lens.

Meanwhile, your DSLR is sitting at home in the closet. Guess which picture wins.

Here are two pictures I took recently, one with the iPhone, when the light was amazing, and one with my DSLR much later in the day, when the light sucked: https://goo.gl/photos/cnMFQaeUNHcBQdVG7

The clouds in the iPhone photo look amazing, and there are no cars in the street cluttering the view. But zoom in and see nothing but sensor noise and blurring from compression and generally poor technical performance of the camera.

Then look at the one taken with my DSLR. You can zoom in far down the street and read signs perfectly. But there is nothing interesting in the picture at all.

The iPhone phone camera sucked. The iPhone photo wins.

(Honestly, the iPhone camera almost ruins the picture, it would have looked amazing with the DSLR. But it was at home on my shelf. Not very useful there.)