Calcutta University's syllabus is standard when compared to Burdwan University. However, it will not help you get good grades, instead, it will develop you in a better way. CU will provide the proper exposure as it is India's first state university with 150+ institutions.
For achieving good academic scores, You can also enroll in other institutions such as Burdwan University (Chandannagar College is a great institution), Rabindra Bharati University, or private universities like Techno India or UEM. They are a bit expensive, yet they not only deliver good marks, but also placement prospects. So the choice is yours, if you want to go to CU opt for it or if not go for other colleges.