"There must always be a rule to have peace. And you cannot apply rules without enforcement. Enforcement implies power. So you always end up with the issue of how to organize power."
no ruler, no rules. if you take the iron out of the system of law, if you make it voluntary, if you remove enforcement from the equation, then the rules cease to exist.
there's no useful distinction between the notion of the absence of a ruler and the absence of rules. unless you are trying to get at the difference between democracy and - say - monarchy. but if you are trying to say democracy equals anarchy, i think you need to define your terms.