in terms of text editors on Mac, nothing else is really that close
emacsPeople that know how to read?
- find in project is slow - window and buffer management - editing via SFTP (tho Aquamacs has horrible lag for me) - syntax highlighting crashes on really long lines and files - too many keyboard shortcuts... I often hit the wrong key and have it add a random code snippet to my JavaScript file (yes, this is probably configurable, but I expect good defaults from commercial apps)
The difference is setup overhead. If you discount the effort to get your environment dialed-in, then of course emacs will be the best choice. On the other hand I encourage you to consider that Emacs Lisp may not in fact be the best tool for all jobs.
I'm not sure why you put "productivity" and "usability" in quotes, or why you mention "beginners" and "want to just click a few things". We're talking about programmer tools here, so suggesting that a non-programmer couldn't use emacs is not really apropos.