If the MH is obvious, any1 with half brain can discover it.
Few days ago I played a game where there were 3 obvious mhackers, they were all friends and from same country. So I reported them, and when I went to see if they were banned, I accidentally bumped into a topic where some1 reported a guy from the same game, and he got permaban, so it turns out there were MIN 4 MHERS in that game, and the worst part is, all had 100+ games. How is it possible that nobody discovered them earlier ?