No, both are the same. When you use Visa Fast Funds, the money is transferred into your bank account. Your ICICI Bank Visa Debit Card number only acts as an address to your bank account.
Using Visa Fast Funds offer additional benefits -
Faster - Receive money immediately any time – 24hours a day, 7 days a week
Simpler - Transaction only requires beneficiary's ICICI Bank Visa Debit Card number
Safer - No more hassles for Beneficiary to visit a location and carry / store cash at home
Convenient - Immediate SMS alert for Beneficiaries registered for mobile alerts
Transparent - Charges paid by Sender, no fees payable by Beneficiary
Better - It is the convenience of a normal bank credit, only faster. Use your ICICI Bank Visa Debit Card directly at a merchant POS or withdraw the money at the nearest ATM