i can't tell the exact answer but can give you some points of considerations .hope others can give you better answers . first the bms course is better than ba eco hons as has more placement opportunities . but hansraj or ramjas college are not very famous for bms course and the ba eco(hons ) is very well structured in both of the colleges .there can be other points also but i think ba eco hons is better in both the colleges than bms 

so compare carefully