SamuraiBlue
Captain
Given the size of Chinese economy compared to rest of BRCIS, it's not hard to see China will try to take a leading role in the BRCIS. In transactions involving fully fungible products such as commodities, buyers have large bargaining power. China has enormous appetite for natural resources so if China wanted to settle parts of its commodities deals using RMB with Brazil, Russia, South Africa. Are they just going to refuse? The same logic can be applied to non-US western firms. If there's profit to be made, are they going to refuse good deals because parts of profit are in RMB not in us dollars. In other words, don't expect too much loyalty to us dollar from the rest of the world.
It looks as if you do not understand how supply and demand works nor how an equal powered voting committee works either.
If the commodities in question is rare and supply is rare then the one who sells have dictates the details not the buyer. As for power struggle within the newly established international bank, well we'll have to wait and see how it works.