node.js native binding slower than php native extension

Hello i am currently trying to port a php-extension (native C) to a node.js native extensions.

i am using nan ->https://github.com/rvagg/nan - for api abstraction

i have the following node cpp code:

NAN_METHOD(Core::getInfo) {
   NanScope();
   int somevar=1;
   Local<Object> return_obj = NanNew<Object>();
   return_obj->Set(NanNew<v8::String>("int"),NanNew<v8::Integer>(somevar));
   return_obj->Set(NanNew<v8::String>("version"),NanNew<v8::String>("teststr"));
   NanReturnValue(return_obj);
}

and the following php-extension c code:

PHP_FUNCTION(core_get_info) {
   int somevar;
   if (array_init(return_value) == FAILURE) {
      RETURN_FALSE;
   }
   add_assoc_long(return_value, "int", somevar);
   add_assoc_string(return_value, "version", "teststr", 1);
}

when running the call to this function in 1000000 iterations the NODE variation is MUCH Slower.

test.php

for($x=0; $x<1000000; $x++) {
    $i = core_get_info();
}
var_dump($i);

test.js

var x=0;
var i;
for(x=0; x<1000000; x++) {
    i=core.getInfo();

}
console.log(i);

the factor seems to be about 170% slower in node than in php - has any one a tipp what i am doing fundamentally wrong in the node part.

edit: node version v0.11.14