Well they're public banks. Most of the time the representatives are clueless about the various features of the card provided. For them, many a time, a credit card is a credit card, doesn't matter which one you're taking. Many people have faced problems while applying through branch, including myself. I had applied for Eterna(which I mentioned in the form) from Bob. Easily met all requirements, but they gave me Premier instead!
Maybe not all branches are the same. But why take risk? When you apply online, you have proof and things are usually structured. If they issue a lower card, you can complain to RBI with proof maybe.