a title tuner is just to help you get traffic to your pages.
for example : you have an article titled 'money-the most important aspect of life' and your title suggestions are 'finance', 'how to make the most of the available finance' or something like that. it simply means that you can use the title you have at hand or change it to the one that is being suggested.
you can use the update option to change the topic and it will tke care of it automatically. you will not need to change the content of your pages.
if you have more traffic to your pages, obviously you will get more points in terms of people visits. this is a method to just reach out to people.