pretending bitcoin needs to do more tx/s than mastercard, paypal and visa combined is like pretending that bitcoin has to be the sole currency for atleast 4billion people.
bitcoin does not need to be used as the sole currency for half of the world. it doesnt even need to be the sole currency for quarter..
the UK pound is a currency that is successful but for under 70million people.. thats just 1%
things like stocks and shares are only used by, again only 1% of the population directly
gold is traded by even less.
but..... they are all active and successful currencies and investments. thus they dont care about tx/s figures..
in my eyes its mastercard and visa that are the worried people. so they dont just tell you the tx/s of their UK bank accont holders.. they dont just tell you the tx/s of their american account holders.. but instead they group together all tx's of all the different databases and networks they have to try to bulk up their presence to look like a giant.
but in short mastercard UK works on a different database, different network than mastercard US. same for visa UK/Visa US.
and for anyone ever using these. when you look at the live balance in the bank account it always has 'balance' and 'available funds' and many people see upto a 2 day delay before the tx tallies with actual balance..
thus mastercard and visa are just crap and they know it.
I fully agree with your comment in that bitcoin does not need to be the new 'world currency' in order to survive and be successful. I do however think that the present limitations has to be addressed even if only 1% of the world population ends up using it. Not sure how many bitcoin users there are at present but I'm pretty sure its not anywhere close to 1% of the world population.
Expectations are that the world population will be around 11 billion by 2020 (or 2025, cannot remember now) and 1% of that is 110 million. Bitcoin will have to scale if it wants to handle transactions from those 110 million people.
In regards to Visa Card transactions. You can find the figures for Visa UK on their page at the following link
http://www.visaeurope.com/newsroom/news/1-billion-visa-contactless-purchases-made-in-last-yearQuoted from the page the link points to:
Visa Europe is also the largest transaction processor in Europe, responsible for processing more than 16 billion transactions annually – at a rate of 1,622 transactions per second at peak times.Could not find any stats on Master Card.