If you mean that it uses the skill of the fireteam leader then that's not true I have been in fireteams of 3 or 4 players where we have been evenly matched against opponents for hours. One person joins (a guy way better than the rest of us) and suddenly there is a step up in the skill level of our opponents. There has been no change in fireteam leader, but we face tougher opponents. This isn't just a one-off case. This happens whenever this guy joins us and will continue for every match he's there