Better at what?
Lower resolution gaming (under 1440P) then 9600K would be better due to the better performance per core however at a higher resolution the difference becomes minimal.
For multitasking/editing the 2700X is better due to the additional cores/threads.
AMD has a better upgrade path currently.
For gaming/editing I'd actually opt for the Ryzen 3600 as it has excellent performance per core and extra threads for multitasking/rendering.