Hey Yogesh,

There is nothing like that the south campus colleges are inferior to north campus colleges. Tbh, the faculty is almost same and as valuable as north campus colleges. Some south campus colleges of du are even better than north campus colleges like lady sri ram, venkateswara and more are well reputed and infact good in all aspects. See some colleges like srcc, St. Stephens, lsr  have their own reputation and name and courses done from these colleges stand out. Else every college is almost and atmost same in other terms.

Hope this is understood.

Good luck!