anchor.diff:            "percentile_25" : 0.0,
             "percentile_50" : 0.0,
             "percentile_75" : 1.0
  -        },
  -        "slowest" : [ ]
  +        }
         }
       }
     }
  
positive.code:           "percentile_75" : 5,
            "percentile_90" : 7,
            "percentile_99" : 10
          },
          "slowest" : [ {
            "node" : "localhost",
            "max_time" : 15,
            "avg_time" : 4,
            "request":{"query":{"match":{"_all":"a*"}}}
          } ]
        }
      }
    }
  
negative.code:           "percentile_25" : 0.0,
            "percentile_50" : 1.0,
            "percentile_75" : 1.0
          }
        }
      },
      "competitor_2" : {
  