When replacing cables… Don’t bother with anything other than genuine Shimano SP41 for the outer IMO, anything else just degrades in shift quality far too quickly. Also make the cable runs as straight as you can, any unnecessary bends will affect shift quality. Use a good quality slick inner, preferably a 1.1 rather than 1.2, and decent sealed ferrules too.
I’ve had customers with XTR wonder why their shifting felt crap, and shown them how good Deore can feel with brand new cables. Then replaced the cables on their XTR and blown them out of the water!
To answer your original question though… SRAM NX will have the lighter shift action. But the cables are still the most important thing to shift quality.