Yeah in transactions fiat will not more faster than bitcoin because its digitalized completely. It would take time for confirmations only.
If wanna send fiat anywhere in the world It needs any support medium like paypal, moneygram, western union or atleast bank support but bitcoin is not like that much faster and its sending from our bank(wallet).
Exactly, and the value of bitcoin keeps on fluctuating, so if the price is higher you can get higher amount of fiat when you convert your bitcoin to your local currency, and the transactions are fast and credits are instant as compared to banks and with minimum fees.