The funny thing is that most of these people who get these huge numbers always seem to be playing on teams that lost. In order to get these numbers you generally have to take advantage of certain things that inevitably do not involve actually holding or protecting objectives.
It's always hilarious to me when these kinds of idiots start griefing everyone on their team for being bad players, talking trash to people who have 10 times the objective points that they do. In other words, it's great that you ignored the objectives and went out of your way to hit more people or heal more people, but if you don't do that in a way that causes your team to win, you are still a loser.