I love reading about the immense power of the PS4. Judging by some of the things I read, it's like a HAL9000, crossed with several Cray Titan supercomputers.
Why do people care if both versions are identical? Does it really matter? $500 Million in a day suggests most couldn't care less.
I'm glad that everyone gets a decent experience. I don't take any pleasure in knowing that that folks playing on xbox are playing at a lower resolution, or frame rate.