fix benchmark for v2

Author: feross

perf/util.js

@@ -11,7 +11,7 @@ exports.suite = function () {
         console.log(String(event.target))
       })
       .on('complete', function () {
-        console.log('Fastest is ' + this.filter('fastest').pluck('name'))
+        console.log('Fastest is ' + this.filter('fastest').map('name'))
       })
       .run({ async: true })
   })