Hey man, these are not the true figure nor these are the top ten banks. Check out Bloomberg.com or FT.com or forbes.com to get the correct figure.
Fo your information, till today Citi bank is the biggest bank by asset in US, BOA is holding the 2nd position. And, by market value HSBC is the world's biggest and by asset it's the number third.
These are the craps to believe how come SG came into the picture,just few weeks before HSBC was trying to acquire the bank,it was France govt. who opposed foreign players to acquire their bank. And by above given banks, 70% of them are shortage of huge cash flow that is why most of them trying to generate money by selling their rights or preferred stocks or warrants for survive.
Check out below few message, you will get the details about true figure.