Making sense of 去华山怎么走比较好？
比较 here doesn't so much accentuate the comparison between two or more objects/methods. It more gives you an idea of something that has a quality to a somewhat significant degree or above the average. (So in some way, it is a comparison, but a comparison to an unreferenced standard/average). 

It can be loosely translated into 'relatively', 'fairly', 'rather' or 'somewhat'.

Another example would be: 


  玛丽长得比较胖
  
  Mary is rather obese/overweight.