I think we should not even compare bitcoin with any other normal banking system because bitcoin is now a very strong asset and it is proven. Bitcoin has reach to his full height and noone can compete with it. Nowadays in a banking system a person can not control his own money which is his hard earn money. Bank always keep an eye on us and cut or charge the unnecessary fees and whenever they want they freez or block your account on the other hand bitcoin give us financial freedom. With the help of bitcoin without any 3rd man or any government approval we can easily do transactions whenever wee want without any unnecessary charges.
Aside been strong, Bitcoin and bank are not the same in many ways. The banks takes propels money as deposit, use the money for investment and give the money to other companies and institutions at high interest. They also borrow the central banks some part of their money, the micro finance banks do the same and deposit money into commercial bank for the same purpose, to make interest from money they collected from people. The only similarity with Bitcoin is the fact that the both process payment.
Bitcoin first of all is decentralized, it doesn't have a system that collect money from people, it's the keys that controls coins and it's anyone that has the private keys that can spend money, you don't need bank authority to spend your money, you don't need to go through any process to use your money and the most important part is Bitcoin is an investment, money kept in banks are savings that inflations can destroy at anytime. Bitcoin is better in many ways.