Certain that it's not your intent, but the hidden rules of the road visible only to the experienced here do not add to the new user experience. Y'all have a lot of tribal lore, rules which do not appear in your FAQ or new user communication, and the first month of activity here revealed that some of y'all are agressive in enforcing them.
Rules are not hidden from new users. Any extra privilege granted to higher reputation users is documented at:
Other than these documented privileges, there is no discrepancy amongst any of the users. Any let me assure that there are no extra rules which higher-rep users are able to see.
The very issue of editing the Original Post by users itself without their consent is transgressive, and users, IMHO, deserve a gentle explanation in the FAQ or a New User Introduction communique that you do that, and why.
Information about editing is here:
And, being able to edit/suggest edits to other user's posts is one of the core strenghts of Stack Exchange Model.
Other than that:
Help Center is relatively new, so if you find any particular information missing over there, let us know and people would fix the issues. You may also propose changes which you think would be helpful to get new users acquainted with the Stack Exchange Model.