This sounds good for a first approximation, since it is monotonically increasing if we win battles and manage our resources well, and decreases when we're losing.

作为一个第一近似值，这听起来很不错，因为当我们管理好资源和赢得遭遇战的时候它就增加，而我们在丢失比赛优势的时候它就减小。