I think why bitcoin is better than banknotes is because bitcoin is more versatile and bitcoin has a futuristic system called blockchain. Being a bitcoin user it is secure, easy to transfer anywhere and anytime. And bitcoin can not be tampered thats why bitcoin is better than bitcoin.
Well, bitcoin really has the advantage of the system and what it can offer the user, transfer money at a great distance and at a very low cost, eespecially it is an investment to bring more profit, that is enough to show the superiority of bitcoin with banknotes. However, things always have a balance and no perfection, bitcoin has the advantage, but banknotes are not inferior, it is still effective and useful in life, if by comparison, we still can not say anything better