Two of the world's commodity powerhouses, Vitol and Trafigura, have raised over $10 billion this week, despite rival Glencore's run-in with investors, which they say shows bankers understand the sector better than bond or equity dealers. As commodities prices tanked in late September, a series of research notes on Glencore unleashed a bear raid on stocks and bonds of publicly- and privately-held companies. But that has not stopped privately-owned Vitol, the world's largest oil trader, from closing a syndicated loan worth $8 billion.