The difference being -
1) If you have more than one Mac in the network, many brands of wireless router do NOT route appletalk over the wireless connection. Bad for OS9 machines and Apple printers.
2) Many brands do not allow you to update the router Firmware from a Mac. So if you don't have a PC on the network you have to call a friend with a PC laptop to update the flash RAM in the router, which sux because you have to endure the taunting from the WinNuts.