I assume they use the bandwith measurement as part of the calculation in finding the best host in the lobby.
I see no other reason for them to list the bandwith.
Them? Bandwidth is what your Internet server "sells" us all. Its the size of the "virtual pipe" that allows packets or pings to travel between. Bigger the BW the better connection, and better probability you will be made host.
Them meaning Treyarch. In the Black Ops 2 options menu if you hit select it will show your bandwith. This feature I believe has been on every COD game I've played which is all of them since COD4. I am just assuming that along with your ping they look at your bandwith as well to make sure you have enough to properly host a match.
On MW3 it showed ping on searches which was much better. always tried for 50m/s connection but didnt always give good connection. So y is the host hampered????? I know everytime I host cos my k/d ratio is appalling and i empty clips into people with zero effect. This then causes a host migration cos at end of day im not gonna host with that happening, then the next person will do the same, disrupting for all, do treyarch not understand that putting host at disadvantage effectively ruins game for all??? WELL DONE AGAIN TREYARCH!!!!
The host connects to everyone. Each person has their own private exchange of packets with the host; player 1 -- host, player 2 -- host...player 11 -- host, back to player 1 -- host
Because of this everyone's ping factor into your connection. If everyone is averaging 10m/s of ping then by the time you get a refresh of where everyone is at 110ms will have gone by
Now assume that you have a flawless connection of 0ms ping (which is impossible) but two people in your lobby are hitting 100ms of ping and two others 50ms of ping whilst everyone else is at an awesome 10ms
The time it takes you to communicate with the host is instant but those 4 other people are combined 300ms and the combined total of everone else is 60ms. The time it takes for the host to do his work and get back to you is 1/3 of a second.
Now you see why there's lag even when you have a low ping