How about a lot faster than wireless? Theoretically, even under the best of conditions, your 802.11n connection is going to top out at 300Mbps. Your typical Cat6 Ethernet connection however is going to run full speed, 24/7, at 1000Mbps (1Gbps). Furthermore, wired connections are more secure and more reliable. Packet loss and interference isn't the problem that it is with wireless networking. It's a helluva lot easier to set up as well. Plugging in a USB adapter is not an ideal solution, as that only further decreases your speed. USB adapters are a terrible bottleneck.
Wireless connectivity is fine for the basic needs of my netbook and my Nook, but it's not something I'd count on for much else... especially the high demands of gaming.