is bitcoin more popular than US Dollar ?
Usd is a universal currency . It is known and respected in every country while bitcoin is in dwveloping currency the userd where increasing in numbers but it will not absud or be over in bitcoin. It is only use now for trading online not like usd in everyday life.
yes currently bitcoin is in developing stage but you can notice that the speed of its development is much faster than any other traditional currency even faster than the development of USD and I have noticed one more thing that USD is used only by those who have to transact or shop internationally while bitcoin is adopted even for local use like for holding for future as trade assets etc.
I think both of them have in common bitcoin and the dollar is accepted in many countries, but that is to be special for bitcoin bitcoin compared to the dollar is not controlled by anyone and you're free to do anything with bitcoin