Limits very strange animals. They are set in secret meetings with limited logic. My Dear Wife and own a business together and report the same income. My credit files are 15 years older than hers. Her cards usually pull a limit between $13,000 and $21,000. With the exception of Disco all my cards have under $11,000 limits. Our scores are less than 10 points apart over 750. She can apply for anything and get $15,000 and I apply and get $3,000 In short tell him not worry. I do think once you get a high limit on one card others tend to follow suit and match.