Cemu 1.4.1 (WiiU emu).New Super Mario Bros U and more now play great! some at 60FPS!.

[JRPGfan]

NX will have launched before Cemu is up to the level Dolphin is.
I really doubt emulators have much of any negative impact on console or software sales.

What they do, do is ensure that in the future, we ll still be able to enjoy games after our consoles have died on us.