This depends heavily on the context. You asked an earlier question about "autocratic leadership", so I imagine that "ordinary leadership" might refer to leaders that are elected. I'm guessing that this is what it means. However, in some parts of the world autocratic leadership is what is "ordinary". Again, I would have to see the context.

Ordinary leadership makes me think of only one thing, the usual democracy found in our days which is often based on a small participation of voters in the elections, an evolution to the traditional essence of leadership suitable for times of peace.

ordinary + leadership