The problem with your theory is that you've only had several encounters Judging from your time played and higher bracket it isn't surprising you've rubbed shoulders with people equal or above your skill. As I previously stated, the current sbmm probably drops in people above/below your bracket for the sake of match making time. That's why you would get matched with better/worse players There's also the problem with destiny pvp being imbalanced to a large degree, which skews people's stats and would result in them being put in the wrong bracket.