It does not take many forces to go on a rampage against innocent unarmed people, as most victims are.
ANP/PPP, etc could easily kill 80,100 unarmed innocents in a week as MQM does, but they don’t.
ANP/PPP do some bad things, but again, not as bad as the MQM, and that is not because of numbers. It is because they are not run as a criminal mafia - as you have said.