I don't think so, because no one that will guarantee your bitcoin other than yourself. You can't complain to police or other authorities when your bitcoin was lost if you are living in country where government don't recognize bitcoin. So, if it lost, then it's gone forever. In bank, they can give guarantee to secure your money.
Any Bank will always give a guarantee their customer that they will secure their money no matter what happened, otherwise there will be no one to put their money in the bank (marketing tactics).
In term of solely for security ,
BTC is indeed a better option ( Im a fan of securing my own belongings ) if you know how to do it properly but in term of solely investment , I would say that
BTC is a risky bet for now due to its volatility and it will be much better to put your money in safe deposits as an investment
It's fair enough if the marketing tactics by bank don't make us loss, as long as they can secure our money there. imo there is any possibility that we can lost our bitcoin although we secure it properly. And again, no one can give guarantee your bitcoin in your wallet, except yourself.