Based on the two Light/Nature battles, I'd say that Light and Nature are fairly equal? Or at least they were back when we fought, I don't know how Nature is doing now. But IIRC LvN 1 was pretty close, although neither flight prepared for it since it wasn't pre-planned, and in LvN 2 Nature seemed a bit ahead most of the time. (Lightanon here, obvs.) So I'm curious about the Nature/Ice battle coming up, and I'd definitely also be watching a Plague/Nature battle.