I guess Emacs and Vim get so many mentiones partly because we all want to rationalize the effort we put in to learn and maintain them.

Text editors that cost less effort have probably a less profound impact on our lives and thus deserve less discussion.

With Textmate you write in Markdown. In Emacs you have org-mode, which is mind-boggingly more powerful. Textmate lacked a code browser last time I checked (not entirely sure there). It does not have Magit or AucTex, either.

Last, and certainly not least, simple text navigation and manipulation in Textmate is way inferior to Emacs or particularly Vim. As in: no macros, no incremental regex search and replace, and just a lot less movement and editing commands. Also, a lot less configurable.

Well, and Textmate is Mac only of course.