Thing is you have to expand beyond just specs, even ATI and Nvidia new this over time. Everything must expand, that's why Nvidia and ATI focused on adding functionality, multiple monitors, 3d, computing and expanding the GPU role in as many fronts as possible besides just raw horsepower. Yes the PS4 should have at least a 7870's worth of a GPU inside to be fair, it will most likely be not, which is a bummer but a large issue you have to realize is that consoles are evolving and must expand and I applaud that.
They are trying new things, if the DS has showed us anything is that Innovation is a huge driving force for the imagination of developers and the enjoyment of gamers even if the PSP was the more graphically powerful hardware. You have to give whatever comes up a shot, give it a good look over, try to imagine the vision and don't just trash it because it doesn't YOUR preconceived ideas of what it should be. Try to see where things could go, what territory could we reach, especially with the popularity of streaming these days on Twitch.tv I'm excited about this possible "Share" button. Take a break from the specs a second and hopefully we may see something great! Here's Hoping!