Hello, I hope you are doing well

B. Tech in CSE is a very good career option as the demand of B. Tech CSE Engineers is increasing day by day.

Now there are certain differences between doing B. Tech in CSE and doing it with some specialization. Doing CSE according to your your interest is important, but If you took CSE with specialization big data analytics in your case, you will become limited to that field. Also, when you will apply for jobs in various companies you will be only selected for work of your field. Because, there are many companies which only consider B. Tech in CSE students during the placements, yes there are some which give preferences to specialization candidates but that number is not very much in the favor.

On the other hand, if you pursue CSE without specialization, you will focus on those aspects on coding which are important for your career ahead. For example most of the companies conduct a coding round for shortlisting the candidates you can focus on clearing those rounds when you don't have any other particular topic like Big Data to deal with. I hope you are getting the point and yes, B. Tech in CSE is way better.

Hope this helps