Emacs is "better" only because it has more features at present, and is somewhat more mature.
But emacs remains replete with bugs, the performance leaves a great deal to be desired, the UI locks up if you update your packages because the whole thing is single-threaded, and emacs lisp (the language) quite frankly sucks, a lot.
Lem is not very mature and has a lot of sharp edges but already in this state I can see that it will eclipse emacs if it continues its current trajectory.
But emacs remains replete with bugs, the performance leaves a great deal to be desired, the UI locks up if you update your packages because the whole thing is single-threaded, and emacs lisp (the language) quite frankly sucks, a lot.
Lem is not very mature and has a lot of sharp edges but already in this state I can see that it will eclipse emacs if it continues its current trajectory.