Hello Aryan,
There is not a huge difference between the placement opportunities of both the colleges mentioned by you, i.e. Aligarh Muslim University and Delhi University. Still Aligarh Muslim University has a slight higher rating in terms of placement.
You can try to contact the Alumini of both the institutions for a better vision.
Hope that helps! :)

AMU Aligarh

Admissions Courses & Fees Placements Reviews

Shortlist

Brochure

DU Delhi

Admissions Courses & Fees Placements Reviews

Shortlist

Brochure