They are the same under FICO scoring if that is your only account but they are not the same under manual review and larger credit lines help your overall util to a larger degree. If you had 2 other accounts with 1k lines and one had 60% utility, an account with 9k in credit free really lowers your total overall util while the 500 dollar line wouldn't.
Still there is no need to discourage someone from getting a card that isn't the very top if they know what they are getting and that is what they want. Any credit is a great step for many on this board trying to rebuild their score.