I have no idea. I never look who the leader is, and people rarely speak unless they’re defending a point on a node map (including me).
But now that you mention it, there’s been more than one occasion where I said something and noticed from the red text that I was actually the leader.
My HK’s, RBG rating, and honor level aren’t the highest but it’s certainly possible I could be higher than the average player in the BG.
But like I said, people rarely talk horde-side so it’s not really a factor. Maybe in the epic BG’s where there’s more variation in strategy.