The whole notion of a staff "could be manipulating results or brackets" probably emerged when some noticed it's quite difficult to win a match or when someone pointed out the the same person is winning over and over. This cannot be the case however. Whether it's Challonge or KTS, they both run an automatic random brackets match making system which prohibits manipulating match ups. Meaning, if you get paired against someone who is (obviously) more skilled than you are which in return get you frustrated, you cannot make a topic and complain. The brackets are RANDOM. The host doesn't get to decide who gets to go against who.
We allow both Challonge and KTS because they're both approved systems and they both guarantee that the host will be playing by the rules - there is absolutely no room for someone to edit or change something to his or her favor when everyone can see what's happening.
If you still believe that we have a staffer who is manipulating results then you'll have to support your argument with evidence to support your claims otherwise we simply cannot reach a result that would satisfy you. All of DA staffers have already reached the peaks of their time here at DA, I mean being a staff in DA is an honor for some of these guys and we're all one big family. I'm 100% confident when I look at your post and say that we have NO ONE among our staff team that will manipulate someone's results or brackets, they're all trustworthy and you'll have to take my word for it anyways, since that's what I truly believe.
If you still have concerns then PM me the rest of the details. I dislike discussing such matters publicly. I'll lock this thread.