You could use "the" if you have a list of specific other things in mind (such as the functions of a phone), but generally when you use this expression, you don't. I can't recall a native using "the".
E.g: "University A has a better teaching staff than University B. All other things being equal, I'd go to University A."
The point is, you don't have a list of "all the other things" because, by definition, everything but the teaching staff is included.
Student or Learner