Why does anyone care how many CPU cores, GPU shaders, or transistors the new iPhone has, then? Those shouldn't matter either if the OS manages things well, righ

Why does anyone care how many CPU cores, GPU shaders, or transistors the new iPhone has, then? Those shouldn't matter either if the OS manages things well, right? Comparing RAM between different mobile OSes is not particularly relevant, but then neither is raw CPU speed or graphics horsepower. Still, people do the latter all the time - and comparing to previous iPhones IS relevant.