Obviously, there should be difference from one branch to another. For example the Aakash Bhopal and Aakash Indore will not have the same faculty or same facilities. Now the institute curiculumn may be same but there are always difference in all other perspectives.

Also being in a good branch means leading with a good competition. And if you deal with good competition your marks will undoubtedly improve.

Now the next factor is which is better. As per the internet researches, Aakash Indore is more organized than Aakash Bhopal and is reviewed to be better in some of the perspectives as Faculties, Reception and facilities.

I hope my answer helps. All the very best for your future endeavors!