USB 3.0 FAQ confusion

[KK_Omnisys]

I've been reading up on USB 3.0 at janaxelson.com but got confused when I got to the following part

How fast is USB 3.0?

USB 3.0 defines a new SuperSpeed bus with a bus speed of 5 Gbps, which is more than 10x faster than high-speed USB. After encoding and and other overhead, the bus can carry 400 MBps of data.

Does the above mean that the computer-to-hub bus speed is 5Gbps, but device-to-hub is maximum 400Mbit?

Then in a single device situation no benefit is claimed by the newer protocol or do I misinterpret?

Regards

KK

[Jan Axelson]

400 MBps = 400 Megabytes/sec, or 3,200 Megabits/sec of data for SuperSpeed. In contrast, the maximum data rate for a high-speed bus is about 53 Megabytes/sec.

Jan