It means nothing more than better rates of interest and other freebies that most other credit cards offer as well. The major deciding factor should be the interest rate that is mentioned for the credit card application. You will see that that is what makes most of the difference as well. Many credit card companies offer free gas on certain usage of the card and other offer various other free valuables. You need to pick the best out of the lot and then only decide and ply for the card. Choosing a good card is as difficult as finding a good partner for life.