The point of quick charge is to get your severely depleted battery up to usable standard in as short a time as possible. Of I need to get out of the house, or I'm at an airport terminal, or any number of things, 15 minutes is surely something.
I'm not trying to argue nor am I trying to Conquer the world. I can see similar technology to qualify quick charge being useful on a mobile device. Current gen iPhone don't have this, though they do absolutely have improved charge rates (I believe starting with the iPhone 6) than their predecessors.
Of you don't think any of this matters that is perfectly fine. I'm not trying to change your mind about the technology. I was just pointing out they don't perform in the same way. Because they don't.