irish_adam :
wow the PS fans are coming out of the woodwork already?
We have no idea which console is more powerful till at least E3 and probably not until they are both released. I remember the bullshit PS fans kept spouting about the cell processor being the most powerfull thing on the planet and yet when they analysed screen shots there was no difference, some review sites even edged towards the xbox at the start. Saying that one or another is more powerful or will be better at this point is pure fanboyism as no one really knows.
The PS4 has a GPU that's ~50% more powerful than the XBox One's. That's not opinion; it's a fact.
Whether the PS4's games will
look 50% better is a separate question, and largely a subjective one. But since both consoles use essentially the same architecture (with a few differences in the implementation), their hardware specs are fairly straightforward to compare.
http://www.anandtech.com/show/6972/xbox-one-hardware-compared-to-playstation-4/2
(And no, I'm not a Playstation fanboy. I haven't even owned a console since I picked up a Nintendo 64 back in the 90s. I don't have a dog in this hunt, though I do find the tech discussion about the new consoles interesting, because the new consoles will help determine a new baseline upon which PC games are developed.)