This has happened to me twice in the past couple of weeks and I've seen other players saying it has happened to them too.
Get into a BG.. having the best match of my life. Kill after kill after kill.. I'M ON A RAMPAGE.
Then I pay attention to their healthbars and notice that the majority of the other players are under 50. I'm CP1400+. As soon as I realized what was happening I just stayed on my backbar and played defensively-only. But it still couldn't have been fun for the lowbies. And there were a couple of other high-CP people in there that were not so kind.
@ZOS_GinaBruno