I finally got around to trying this....
I tried 8 tests QUICK, 4 with wireless, 4 wired directly into my Linksys.
Numbers are from speedtest.net measured in mb/sec, Download/upload
Wired
12/3
13/6
22/5
20/6
Wireless
24/4
12/5
15/5
17/5
I still believe unless your Internet can push 20 mb/sec the speed diff between wired and wireless using the Internet is negligible.