AMD Radeon RX 460 ( 2.2 TFLOPs ) vs PS4 ( 1.84 TFLOPs )

Solution
No, because the coding behind a game and GPU driver optimisation have a bigger impact on performance than raw power. Arkham Knight is a good example; it uses an engine that should have posed no problem for modern hardware, yet because the game was badly developed, it ran terribly.
A Flop is a floating point operation. (A simple Math calculation used in creating 3D geometry)
Those numbers are how many floating point operations they can perform per second.
So yes, GPU performance can be measured in Flops
 
Not really, TFLOPs are pure hardware graphics horse power and each company measures them a bit differently plus drivers and os have HUGE part in graphics performance. If you want an accurate measurement got for multiple game benchmarks because that is a much more accurate reading of gpu permanence game wise.
 


then seems PS4 is behind RX 460 😀
 
No, because the coding behind a game and GPU driver optimisation have a bigger impact on performance than raw power. Arkham Knight is a good example; it uses an engine that should have posed no problem for modern hardware, yet because the game was badly developed, it ran terribly.
 
Solution
Yes, The consoles Stats have their CPUs helping solve boosting their numbers significantly.

But while flops are the best way to do a direct comparison between hardware performance, that doesn't always represent the end user experience.

Console OS and games are highly optimised compared to PC drivers which are a bit of a mess in comparison.

Console manufacturers hold the quality control key.
PC has none, hence BS like Arkham Knight being released
Even if your GPU was twice as good as a PS4, you might not see it if the developers do a bad job.