http://www.thehaloforum.com/halo-4-news-speculation/401463-halo-4-ranking-system-info.html
Some guy asked Frankie about the ranking system and he responded that trueskill will be there and there will be a ranking system that matches you against players similar to your rank (no this does not count the ranks based on credits). The only difference is the skill based rank will only be visible to you, 343 hopes to prevent cheating by not making it visible to everyone. Competive players get matched up with people of similar skill, 343 limits cheating, casual players still have the ranks based on credits. Win win if you ask me. I’m a bit tired of this subject having so many threads, I tried posting it on someone else’s but they seemed to just ignore me. If you can help spread this information I would be grateful.