Although NTTF is an amazing institute for gaining practical and technical knowledge, it still is not the perfect option. One of the reasons for its current situation is that it lost the recognition of the government and it also lost the competition. Engineering on the other hand opens a number of doors in the areas of career and higher studies. As an engineering graduate, you will have more recognition and value. 

Engineering institutes impart practical, technical, and theoretical knowledge. In addition to that, engineering institutes also award degree certificates. NTTF only gives you a diploma on the completion of the course and it is inferior to the quality of a B.Tech degree.