That gigaflops chart is bad. 10x per row doesn't really show the proper scale.
The PS4 is 1.8-1.9 TFLOPS as far as I remember, if the lines mean anything at all the PC is around 8-9 TFLOPS.
Nvidia's Tesla K80 tops at 8.74 TFLOPS.
AMD's Radeon R9 295X2 tops at 11.5 TFLOPS
So the chart above shows a 5x difference in one row. I hate charts like these.
Decided to a quick chart using some researched data over a shorter time frame to illustrate the drastic difference the above chart attempts to hide.
Data for graph above
@LabouredSubterfuge would like this chart I'd think.