Slow JavaScript array iter

ben-arrayiter.js

var ben = require('ben');

var servers = [];
for (var i = 0; i < 1000; i++) {
    servers.push({"uuid": "blah", "hostname": "blah", "vms": {"foo": "blah"}});
}

var forMs = ben(function () {
    var filteredServers = [];
    for (var i = 0; i < servers.length; i++) {
        var server = servers[i];
        //...
        filteredServers.push(server);
    }
});

var filterMs = ben(function () {
    var filteredServers = servers.filter(function (server) {
        //...
        return true;
    });
});

console.log('for-loop:  %s milliseconds per iteration', forMs); 
console.log('[].filter: %s milliseconds per iteration', filterMs); 

run.log

$ node --version
v0.10.42
$ node ben-arrayiter.js
for-loop:  0.0077 milliseconds per iteration
[].filter: 0.0446 milliseconds per iteration

$ ~/opt/node-5/bin/node --version
v5.7.0
$ ~/opt/node-5/bin/node ben-arrayiter.js
for-loop:  0.0074 milliseconds per iteration
[].filter: 0.0212 milliseconds per iteration