There doesn't seem to be any. Having played BF since Bad Company 2, i'm obviously not new to the game. But I've noticed players in teams with top scores and high kill rates with very high latency, then on the opposite team their highest scorer will have just as many kills but a low latency, sometimes latency in these cases is as different as 120 for one top player and 17 for the other.
Also, I only join servers in Europe, as that is my region with good ping, yet I my k/d with be shocking (one game this week was 6 - 34). I'm not the best player, in fact i'm pretty crap, but I know the difference between bad game play and bad connections.
My point is, there doesn't seem to be much point in even showing the latency in games if they are so inconsistent.
Sorry for the rant, just a bit frustrated.