1tflop gpu power? Isn't too low?
I don't think so. I think a GPU with modern architecture rated at 1 Tflop raw compute power will probably give you 8-10X in real world performance over what is in the 360 today.
I think most agree that the next consoles won't have the raw compute capabilities of what PC will be able to do at the time (or even now). With that, I would say that consoles have to have a more advanced architecture/feature set than PC's. If that's DX12+, a theoretical Shader 6.x capability, or whatever, I think it's more important than raw compute.
I don't want a replay of the DX9 consoles vs DX11 for PCs because I think PC games have been gimped severely by the consoles as games are designed with consoles in mind first. The Crytek demo of Crysis 3 was the first time, I've seen what appears to be good DX11 support in a game and it's depressing that PC's have been capable of that for a long, long time now.