I would just like to point out that Akira Toriyama himself said that the Power Levels were always intended to be utterly meaningless. Hence why the Scouters were constantly wrong or getting broken.
EDIT: Also, putting numbers on all of this stuff is likely to encourage people to compete over who can make their numbers bigger in the shortest amount of time, turning this all into a giant pissing contest. Speaking from experience on that front.
EDIT: Also, putting numbers on all of this stuff is likely to encourage people to compete over who can make their numbers bigger in the shortest amount of time, turning this all into a giant pissing contest. Speaking from experience on that front.