USD still popular over high popular is compare bitcoin
you wrong is compare, maybe compare dollar paypal , dollar perfectmoney dollar okpay is right placed compare
is comare USD not equal, USD real curency in the world , bitcoin digital curency
I have no idea what you are trying to say but for me I think USD is still better currency in compare to bitcoin as it can be used anywhere to buy anything.
usd is definitely not a good currency, in my opinion bitcoin is going to replace it in the near future because it is just perfect