FBK should always be the top. She is a top predator after all.
...are we sure they're not just acting with the kisses and stuff? Since you know, they're all avatars and we can't actually see what they're doing or if they're even in the same room.
Suspend your disbelief for a second. The girls are actresses and this is a real time anime, just roll with it. The line between truth and fiction gets really blurry sometimes anyway, look at the current situation on Akirose channel.
Did you ever watch wresting? Its kinda like that, some keyfabe some real life.