Quote from: Come-from-Beyond on March 01, 2015, 12:47:28 PM

In my country if you try to pay with a card that doesn't have enough money then the payment is not accepted. Hence I would compare it to 1 confirmation.

Your comparison is flawed.

If you try to pay with bitcoins, and you don't have enough unspent outputs to use as inputs, you aren't able to even create a transaction. Any attempt to create a transaction with fake inputs would be rejected by every peer and would never be seen by the merchant at all.

Therefore, bitcoin is again faster since it stops "insufficient funds" transactions before they are ever sent whereas it takes a few seconds for the credit card processor to determine if your card has enough funds.