[QUOTE="Mozelleple112"][QUOTE="AM-Gamer"]
If you put a 4k source to it , it obliterates any plasma. You also need a media player capable of upscaling 1080p and they didn't do that. On a native 1080p source the plasma will have the advantage but upscaled or native 4k the best plasmas even Panasonic s look horribly outdated.
AM-Gamer
No it doesn't. The ONLY advantage the X900A has over Panasonic's plasmas is resolution, which is only one of several factors of picture quality. Guess what? Resolution isn't even the most important factor. ANSI contrast (difference between white and blacks in real world content) and colour reproduction (temperature adjusted to D65, depth, saturation, DeltaE errors, saturation, etc) are both individually more important than the resolution. This is why for example a budget $500 Samsung 720p plasma beats the crap out of a 4K Seiki LCD for $1100+. Deeper black levels, superior contrast ratio and greater colour performance.The Seki doesnt even have local dimming, and the Trilmunious display on the 900a exceeds color reproduction in even the best plasmas. Its black level perofrmance advantage can barely be seen side by side. The contrast and colors on a 4k source is painfully obvious.
Doesnt look like they did a good job calibrating it either but considering only Panasonic and samsung showed up that doesnt suprise me. Here is some more facts
"The screen turns itself off during all-black scene transitions. I went with the most aggressive local-dimming option to get the best blacks; while a little bit of glow was evident around bright objects (specifically, white text on black backgrounds), it wasn't excessive. The Sony was able to produce an even deeper black level than the VT60
http://hometheaterreview.com/sony-xbr-55x900a-ultra-hd-lcd-tv-reviewed/?page=2
"I cued up the same scene on Blu-ray (Chapter 12, about the 1:26:25 mark) on two 1080p TVs (the Panasonic VT60 and the Samsung UN55F8000), and I viewed the TVs side by side to observe the difference. I sat about six feet from the TVs, which is a good four feet closer than I normally sit. I was feeling generous. Could I see an improvement in detail on the 55-inch UHD TV at this distance? Yes, the UHD image looked crisper and more defined, especially compared with the 60-inch plasma. I could more clearly see the individual blades of grass in the dirt clumps around the sewer, the background wall texture was more defined, and the strings of Spider-Man's web and the stitching of his outfit looked sharp and precise"
I like how you conveniently left out the rest... "The Sony was able to produce an even deeper black level than the VT60, but only when I turned its backlight way down, which resulted in a picture that was much too dim. " 
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