A lot of the revolution is just getting within 5-30% of Windows!
If you need every last bit of FPS maybe it is lagging, but 5-30% slower is roughly on par at a large sense, it's less than the difference of e.g. one NVidia GPU generation to the next, so it makes it playable.
One problem is that having better FPS stops mattering if the frame pacing and timing is bad, making the game feel like a juddery mess. Or if there is significant input delay differences.
That's why all the data matters for all of these dimensions; game performance is much more than FPS per watt over time.
When people see "linux gaming is great now, look at the fps" it comes across as potentially disengenuous because of all the other factors that matter and should be tested. Or rather, if a reviewer is talking entirely about framerate, then I just can't trust their opinion and expertise when it comes to the state of Linux gaming.