Despite the complaints I am going to post some things about the comparisons. Some of this is about comparisons in general.
This is avscience.com. I shouldn't even have to explain why it benefits us to take a scientific approach when differences are seen and try to figure out why certain differences were seen. If somebody wants to start a site like iShallNotBeQuestionedButCanQuestionOthers.com they can, but I think the avscience approach is better.
I said before that being overly touchy can make it more difficult to figure things out and then I think more evidence was provided with the complaints about being questioned and an approach to try to keep people from questioning things. Right from the start I have a seen a, "Don't question me or my calibrator" attitude. I can't think of any posts here from Kris or I where we have tried to keep people from asking us questions about how things were setup or what results we were getting. Could be wrong as always though and I'm not going to search back to verify right now.
I've read multiple times that the pictures posted prove what was seen. I have tried to verify that the pictures do represent what was seen and so far what I have gotten is that the pictures do show what was seen in person. So, let us take that for a fact for a moment.
I've attached a cutout of the LG logo from the lower right of the Eiffel Tower pictures from both projectors. People can use a program that will sample the pixel values with the original pictures if they want. I used Microsoft Paint with the eye dropper and going into edit colors to see the values and for as much the same spot on the L as I could do I got a luminance value of 128 from the JVC's picture and a value of 146 from the Sony's picture.
This is a scene where the iris shouldn't close on the JVC at all (not sure about the Sony in Full).
So, if we assume that the pictures do accurately show what was seen in person then this mid level gray on this low detail object was seen as brighter with the Sony than the JVC.
If Andreas knows so much that he should not be questioned then I think he should be able to tell everybody exactly why this mid level gray showed up as dimmer with the JVC. If he wants to claim a single factor then a test could be run later to change only that one factor and see if it is the reason.
I have some theories, but they are only theories at this point and I'm not going to state as a fact why this mid level gray shows up as dimmer in this fairly bright scene with the JVC with the projectors brightness matched and using the same gamma.
I also think that Zombie's point about different screens is a good one. This is the right avscience.com way of doing things IMO. I was trying to go down this general path of trying to figure out the differences as there are many factors that can affect things.
You are also welcome to tell us exactly why the LG logos are dimmer in the JVC's picture. It seems that your position is that the pictures accurately represent what you saw, so if they don't please tell us now that they don't.