Performance difference between AngularJS and MVC 5 page

We have developed a sample page which will display 50 images on page load. We calculated load time(time from request initialization till result get returned) i.e. does not include time to paint those images on browser.

In both approach i.e. MVC and AngularJS we have used same function which will return same data , only difference is that in MVC we returned model which is binded to view and in AngularJS we returned JSONResult which will bind to AngularMarkup.

We are hoping that we will get good result with AngularJS but surprisingly MVC done better? For AngularJS we have used Module/Controller/Service approach for calling method to return data.

So what will be cause of this? Is it implementation problem or something else is changing result.

Note: JMETER is used by Testing team for performance calculation with 500 uers at a time.