We don't want to rule over them and don't want them ruling over us. That's why we created federalism. It's a how we can make peace.Or south mudug joins north mudug in being part of puntland-
For 3 reasons
1 north has a longer running government
2 north has more population
3 north controls 75% of the largest city
if any party should join the other, the logic says south joins north in being part of puntland- atleast that way you can make use of Abdulahi yusuf airport