We're not necessarily arguing against screen size, but pixel density. That is, instead of scaling the resolution linearly with the screen size, they did that an

We're not necessarily arguing against screen size, but pixel density. That is, instead of scaling the resolution linearly with the screen size, they did that and some. So now instead of a low 400s pixel density range like the Nexus 5, the Nexus 6 sits at a de facto PPI of roughly 500. Obviously there's a cost to this, both in battery and hardware requirements to push those extra pixels. Meanwhile nobody can detect pixels on a Nexus 5, but apparently it wasn't good enough. And next year we'll see PPI at 500-600. I just don't get it. As for thickness, I think the Nexus does quite well. It's about 50% thicker than the iPhone 6 which is a great number (~10mm) to be at in my opinion.