Business Law

Universities like NALSAR and NUJS offer certificate and PG Diploma programmes in Business Law. This sphere is not merely limited to Indian jurisprudence but also deals with international business laws, which gives you an upper hand when compared to your counterparts in law schools. In NUJS, this course is taught by one of the best professors of NUJS. Some firms prefer those who have this additional certificate while hiring them. Additionally, many management firms and banks also prefer the students who have Diploma in business law, because by this course they get to know about Law of Contract/Commercial Law, Competition Laws, Laws of Arbitration and International Arbitration, Banking and Insurance laws, Environment Laws and intellectual property rights law. This clearly shows the wide variety of areas covered within a year. This certificate is only given after a candidate is passed in giving his dissertation.

First of all, both are very different areas and they shouldn't be compared, but I would still answer it as to the best of my knowledge.
There is no official data available in India about the number of lawyers in both areas and about their salaries so it becomes tough to compare both.
Business law is about disputes between firms, companies, partnerships, and small businesses.
All these people or most of these companies, partnerships, and firms have their fixed lawyers and when any dispute arises their lawyers fight (I mean the same lawyer for that company), but when it comes to consumer protection laws, it is emerging day by day because awareness among the consumers is increasing and the number of cases is also increasing day by day and they don't have any fixed lawyers.
So, from this point of view, consumer protection law has more scope.