While sure you could pay it because you had the money, not paying it is still bad and what you did
should count against you.
I am not trying to be mean. But that is sort of how it has work. Think about it ... Let's say 50% of a creditor's debtors failed to pay on time -- while 100% of those who failed technically had the money? This would be devastating to the creditor as they would miss their payments and make them look bad and potentially prevent them from having the ability to lend money out in the future.
So on some level its not just about the ability to pay, its about the diligence. A lackadaisical debtor can be just as bad as a broke debtor. Not that I am calling you lackadaisical.
As you sort of pointed out - creditworthiness is not just the ability to pay, it's the predictability to actually pay.
To prevent this on my end I always run my bank accounts with a few months of cash forward so I can set my credit accounts to auto pay a minimum or in some cases full balance. Carrying debt is not something I really want to do.