The first time I came into contact with BTC, I felt that there was little difference between e-payment and BTC. However, with the gradual understanding, e-payment and BTC are becoming more and more different.
In essence, electronic payment is the circulation of legal currency in one or some countries, while BTC is the circulation all over the world（ If every country agrees)
Your e-transaction are settlled by a third party which is your bank and act as an intermediary and can always block your funds if you have not valid proof for your income source.But on the other side you can globally make transaction with Bitcoin without any third party and low fees which is not the case with fiat currencies.
Government can change denomination of notes,can ban your funds, confiscate your money in banks but they can't control your funds in non-custodial wallets and can't ban Bitcoin at any cost.They want to make joint effort to shut down internet which is not possible in any case as World could not function in its absence but still the offline transaction will can be conducted on bitcoin network.So that's btc for you.
If you actually know the usage of Bitcoin then you would not have compared it with the legal fiat of any country as they both are different in nature though similar use.