What I was saying is that is more of a combination, of Batman skills and the fact that because he is popular DC, in general, will put him against characters way above his power level, and because he is constantly put against world levers he was equiped by writers over the years with the skills that allows him to level up using whatever he needs to do it.
The example I gave is a good one I think. If Batman is walking around one night and ends up fighting Lady Shiva, chances are he would lose, but if he knew he was going to face against her, he probably would have the "one move" preped to take her out in a hand-to-hand face off. It's just how Batman works.