Once again, the 3S screen is lower resolution than your visual acuity at normal viewing distance, so the 4S is a clear upgrade. The linked article is talking ab

Once again, the 3S screen is lower resolution than your visual acuity at normal viewing distance, so the 4S is a clear upgrade. The linked article is talking about the pointlessness of upgrading to a higher resolution when the screen in question is already higher resolution than your eyeball is capable of resolving.