I don't buy that it's automatically inferior if you can't operate it with one hand. Larger carries trade-offs, smaller carries different trade-offs, and those trade-offs are different for everyone. You can't hit 90% with one size. I'd buy that you can make 90% happy, but not if the people you're marketing to have used decent smartphones in the form factor that hits the "sweet spot" for them.
In addition the arguments attributed to apple are usually void, and usually vain rumors, (see bunches of contradictory iphone5 rumors), they read like early people talking things like, of course god wanted 7 planets, because it is perfect.
average palm size in some asian countries are small and 3.5 inches are already unusable to them. Samsung has in this case even a better strategy, because they offer variations for diversity of sex, age and ethnicities rather than making totalitarian assumptions :-)
i believe apple will release larger screens at some point and all this apple-mind readings will be forgotten even by their writers. And those people will search miracles elsewise.
