Just saying the 9900k is still the gaming king is not looking at the whole picture, if you just look at the top of the charts and go by that your missing a lot out.
The 9900k is old hat now, its on an older platform with much less functionality, uses much more power and is less secure.
Now i dont know about most folk here but that more than make a difference to me when it comes to a few % in some gaming benches - the Zen2 platform is clearly superior and no 5-7% win is some games is going to make up for that.
Heck we dont even know what the 3800x will do yet, or the 3950x which is still to come to battle the 9900kf
We also dont know the limits of the ones just released either.