There is no difference in certificates issued from various campuses of VIT.
What matters?
All what is required by the IT industry is that you know the concepts and not a krammer. Once the concepts are clear you learn to apply them during your four year course. It all depends on you how you are able to analyse and understand data structures, pointer handling etc. In short you have to imagine the solution from various perspective and it should be out of the box solution.
I bet after two to three years no one in the industry bothers from where you completed your CS
Buddy you can be better than any of the so called ranked IITians if you learn the basics and not kram them.
Practice lot of coding in your first three years. A group of like-minded friends can discuss solutions to various coding problems and if you cannot solve any coding problem learn from your friends. Likewise also teach your friends when they cannot solve. This industry is all about networking and sharing the problems to various issues you will come across.