TeyshaBlue
It's the smell..
I'm not sure the exact details, but I do know that USB relies on the CPU to control the bus and data transfer, whereas firewire manages itself. Also, firewire can xfer data from one fw device to another peer-peer with no cpu or other resources besides the firewire interface required.
http://en.wikipedia.org/wiki/IEEE_1394_interface#Comparison_with_USB
Ahh... I see. FW handles it's own bussing. Makes sense.
Thanks!