Fudzilla and especially Charlie are legit. They say the X730 GPU is based on the Radeon 7000 series (and will mostl likely borrow tech from the 8000 series too).
So theres still hoper that nextgen can run games with the same graphics as the Samaritan demo who would need a GPU at the level of a Nvidia 580. The demo itself was ran on 3 Nvidia 580s but optemization and direct-to-metal programming could give those graphics with a 580 level GPU on NeXtbox/PS4.
http://www.youtube.com/watch?v=5FiwSim567Y
Also I demand at least 3 GB of video memory and 4GB RAM. Cevat Yearli the maker of Crysis said he demands at least 8 GB on next gen consoles.