You will graduate with exactly the same academic qualifications. Studying extramurally is generally more convenient. You can choose the time and place for your study, making it fit in with your work and family obligations. Study often complements and builds on other areas of your life. For example, your extramural study may help you apply new ideas to practical problems at work, or to recognise areas in which you could develop expertise.
Extramural study suits all sorts of people.
You may be someone with years of practical work experience but no formal qualifications, wanting to advance your career. You might have been made redundant and want to continue your education without uprooting your family to move near a university. Many people choose to go back to university after they retire. Or you may simply wish to study for your own personal satisfaction and enjoyment.