In order to compare credit card sg rates, you should look deeply into the agreement and not on the introductory rates. A majority of card issuers have been deemed tricky and would cater you with introductory rates that might only last for a relatively short duration.
A majority of people who do not compare the rate of interest might end up signing up the wrong deal. They would not be able to enjoy the introductory rates. Rather, they would find out that in a couple of months, the interest rates has gone higher. Therefore, you should consider the importance of having knowledge on when the introductory rates would end.