I will not compared the two and USA was one time the best currency in the world. Everything we have now or we would have in future has it time and time will come when human beings that are praising bitcoin now will start to speak evil of it the way we are now calling USA "as a bank desired to take our money in a way that is legal". I have tell several people that "bitcojn is not out to wipe out the fiat system that we think are obsolete but and end to an era and a beginning of how we see and used money".