Just compare it to the Nexus 5 at the same price point. Half the memory, probably lower res screen, the sd card slot is great but I don't think it justifies a $100+ price premium.
I'd rather see Nexus 5's flashed with Ubuntu Phone / Plasma Active / Tizen / Sailfish than all these companies trying to batch order hardware of their own that never has the economies of scale Google could pull off.