It is useless to even think about buying i7 8700(k) with r5 3600 out- there are no sidegrades, well except maybe gaming, we don't knowGreat, so the latest AMD processor is better than the latest Intel processor in a single benchmark by 10%, and cheaper by a fair margin to boot.
I could post some benches showing that the 8700K is only 7% better than the 2700X despite costing 25% more, and you can extrapolate the 10% IPC gains you've allowed.
How? An overclocked Ryzen 2700X beats stock 8700K. That doesn't devalue Intel's work. Because it's a completely unfair comparison to put an overclocked CPU against a stock CPU.
no one on this forum buys 370 EUR 8700K to look at it at stock, it just runs fine at 4,7GHz and with delid at 5GHz and then it is a competitor even to the 2700X MT
so if you have a chip from October 2017 that can do the same or more (ofc more power, price etc), you wont change it for r5 3600(x), there is no reason
if you buy a new PC, well we don't know about gaming, but except it there is little reason to buy anything from intel on the desktop ATM