The lights aren't optimal, but not the reason for the bad looking render IMHO. Cage included BB's light meter, the lights are a little bit darker in the "no GC" render, but I doubt that this is the reason for the suboptimal look.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

Avatar image of me done by Chidori.