I own a ps3 and a wii u so wouldn't say am biased towards 1 or the other. Soo much people compare these specs to what they run in an actual pc but yet try and emulate even a wii game which isnt by any means a powerfull console and u need a fairly decent pc to get games to run so it's not something u can compare. When u think how much of a leap it is from current gen 512 ram to 8gb DDR5 aswell just for starters there's a huge jump and when the first party studios use it to its full potential it will no dout put the wii u to shame. Don't get me wrong wii u is a massive step up from the wii but until wee see some first party games such as say zelda for wii u and say uncharted for ps4 and have something to really compare we can't really say.
End of the day no matter how powerful of a system you have games will only look as good as the people making them can get/ want them to.
But going by specs ps4 outdoes the wii u and no1 can deny that.
Nice post but don't assume the 8gigs of ram is just left for gaming, it's not... the ram will be needed for other features including OS. It will still have more ram available for games yes, but not the full 8 gigs.