Second, the one represents how often the interest rate adjusts after the introductory period ends. (sapling.com)
A higher credit limit will increase your earnings too, but don't worry about the interest rate after the introductory period expires as we wont be keeping the balance anyway! (think-creditcards.com)
Another thing you need to consider is the interest rate after the introductory period is over. (debtfirms.com)