Thats not what he said at all. I have seen a noticeable difference in quality on some models, I never really paid attention to what was the deciding factor. But I am almost certain it was earlier units vs later and this is one of the known changes. Just because RGB passes through the CXA chip, doesnt mean thats what it does on the replacement used later on - which could make the quality worse. So its not that the CXA is better (as its not doing anything), its that the other is worse. However, like I did say originally - this is all from (a rather poor) memory and certainly deserves proper investigation.