@hayhoryou should assume less, read more carefully and provide more objective facts and avoid generalization.
As stated in my previous message I will start changing my mind when I will see a factual progression from a player who once was diamond and now is master+ of course unless there will be clear signs of game exploit, hacks in those demos, videos.
Currently, I can provide you at least 6 clips (if you give me a dropbox or something where ~6GB info can be uploaded) where you will see how current Master and Predator level players play, behave in the game. A clear example in short from the last week - played with current master on my team, upon landing he did not tell that the team is with us while I was busy stretching long jump (and partially did forget to look around as well), we got destroyed.
Next game I face the same guy now on the opposing team, he kills me with ~50 hp left but ends up a game in diamond lobby with 9+4. And as you would see form this game demo his decision making was crazy bad, movement pretty much average yet somehow when enemy is in front of him he now managed to lazer / win every battle. That's the diamond for you - can't land, can't move, trashes people in voice for being nubs, yet somehow ends up 9+4 the next game...
Another 3 videos would show how I lost ~200 RP playing on the team with 1 master and 1 ex-predator in platinum lobbies.
p.s. I don't have any issues with self-criticism, I have been recording and analyzing my games since the day I discovered that such an option is available in FPS gaming and I know my strong and weak points, thus not claiming that I should be at the master level, rather saying that ones that are might not deserve to be there unless we count AA and other trick utilization as part of the skill (read: rewarding people who know how to exploit system, rank up using shortcuts etc.).