Arvind, BA is Bachelor's degree in Arts while B.Tech is a Professional degree in Engineering. IITs are Technical Institutions and Delhi University is a Central University.They both are different in their own perspective, The Amendments on which they are built are different. They cannot be compared. A BA Degree wherever it might be from, cannot be compared to a B.Tech Degree more even if it is from a IIT. This might not be the answer you are looking for but both of them do not have the same value or equivalence.