Weren't you making the point that the 1/2 stop difference between the two phones has a material effect on DOF? It sure seemed that way was you cited your various "problems" with the 4s.
And actually, I think you're rather missing the boat here. The problem with smartphone lens/sensors is that the DOF is TOO BIG, not too small. That is why there are third party software pgms for these phones to "simulate" OOF Background.
One goal has been to reduce DOF, and the only reasonable approach is to increase maximum aperture, as Apple did with the 4s.
From his posts it's clear he doesn't understand photography, just know how to google.