Management can't measure the latter as easily as the former, and arguing against switching is a much more complex argument to understand than "this number is bigger than that one".
There's a very appropriate classic quote for that sort of situation: "Not everything that counts can be counted, and not everything that can be counted, counts."
There's a very appropriate classic quote for that sort of situation: "Not everything that counts can be counted, and not everything that can be counted, counts."