I think that bitcoin transactions are so fast. In simple banks transactions might be very slow.
In the past I would agree with you.
I usually needed just a few hours for bitcoin transaction confirmation and usually 2-3 working days for bank transaction.
Last weeks I usually waiting 1-2 working days for bitcoin transaction confirmation so, it seems, bitcoin is not any more faster than bank wire

I really hope it will change soon.
Probably that because the traffic is really high. I am sure that will be fixed soon. Japan will realease 5g internet technology, probably it will help bitcoin transaction faster. Also I am sure that there are some developer who advance the hash rate of bitcoin to be faster.
Waiting for 1 - 2 days for bitcoin transaction is so rare, I usualy only wait in less than 15 minute.