As we have tried to tell you its a byproduct of the manufacturing process Samsung is using to make the screens. As its part of the manufacturing process and is intended to be there its NOT by definition a defect. All current generation Samsung AMOLED screens have the splotches and lines to some degree whether they are the SAMOLED, SAMOLED Advanced or SAMOLED Plus. This is one of the big reasons we have not had this tech in larger screen applications like televisions that will be used in a dark environments often. All new screen tech that has come along including plasma and LCD have had varying issues before they were perfected and just like them AMOLED will need some time before its perfected.
Here is a post showing the splotches on other Samsung made SAMOLED screens.
xda-developers - View Single Post - Motorola RAZR screen issues w/ pic
As you can see the splotches are there. They are going to be there no matter home many times you exchange it. They are going to be there no matter what device you buy if it has SAMOLED screen. Your only options are to accept it or get a device with an LCD. No amounts of screaming defect, exchanging your device, or posting is going to change the way Samsung makes their screens as multiple millions of people purchase them each year. Accept it and move on.