I don't mind low ranks, because it's always great and such an adrenaline rush to help them, and especially to be the MVP. The main reason obviously for being the MVP is simply down to the facts of I have the experience and know what to expect, what to do and when etc.
I've been put in too many lobbies though with low ranks, where they just constantly steal my kills when I am trying to do a challenge (shotty, sniper = the two that I can't do if no one is helping in any way and they steal my kills). AR and SMG CAN be somewhat easy, depending on ammo drops etc.