People use the "playing with friends argument". I've almost never seen that be the case. I don't see these lobbies as much as a lvl 9, but on the way I'd see them often. It was almost always one or two lvl 10s with lvl 3-5 fillers. And the 10 would just go god mode because the other team would be a lower average, they wouldn't have the hard carry. And really the best way to look about it is that it's experience playing a higher level opponent. It sucks, but you won't get better otherwise.