I have had a Shell Mastercard since 1985 and still got the '3% rebate' card. I sent an email to Chase customer service. Here is the reply I got:
We have received your inquiry regarding the features and benefits of
your new Chase Freedom card.
Please note that the 5% rebate was offered to a small group of former
Shell cardmembers who displayed a particular purchasing pattern.
We believe that by offering you 3% on ALL of your gasoline purchases,
you'll be receiving more value out of your Chase Freedom card than you
did with your Shell MasterCard or Visa card from Chase when you earned
5% on only one brand of gasoline.
We hope that you'll enjoy your new Chase Freedom card by earning a 3% on
all of your gasoline purchases and a 1% rebate on everything else.
If you have any further questions, please contact us at:
http://creditcardsatchase.com/
Thank you,
Jessica Gonzalez
E-mail Customer Service Representative
Account is owned by Chase Manhattan Bank USA, N.A. and may be serviced
by its affiliates.