Will the PS4 represent 50% better performance than the X1

[brendude13]

DirtyP2002 said:

well if you look at the total performance in teraflops, which seems to be the cool thing to do these days, the PS3 was twice as powerful as the 360.

Source?

From what I've read, it's a 10% difference between the PS3 and 360 in terms of FLOPS.