D-Link DGL-4100 Wired Gigabit Gaming Router
(http://games.dlink.com/products/?pid=371)

D-Link DGL-4300 Wireless Gigabit Gaming Router
(http://games.dlink.com/products/?pid=370)

I have what is probably some stupid questions, but I need to ask before I
buy one of the two routers listed above.
This "Optimized Gaming Experience with GameFuel Technology" does it work
either wired or wireless? Like if I get the D-Link DGL-4300 Wireless Gigabit
Gaming Router and if I would connect my PC and my Xbox360 to it by wired
connection to this wireless router will this "Optimized Gaming Experience
with GameFuel Technology" still work or since it is a wireless router it
only works with wireless connections?
Does this "Optimized Gaming Experience with GameFuel Technology" really make
that much of a difference for gaming on a PC and on an Xbox360?

Thanks.