When you use an app like SpeedTest you are as much measuring your ISP's performance as you are your iPad's WiFi speeds. Besides that, ISP performance will usually vary from minute to minute so I'm not certain what value there is in comparing such numbers between users.
If you want to get a more consistent set of results you should measure file transfer performance between your iPad and a Mac/PC. Of course, WiFi performance will vary depending upon your setup (router brand, distance from router, signal noise, frequency band -- 2.4GHz versus 5GHz, security settings, etc. the list goes on and on).
In any case, it might be interesting to see reports on the maximum file transfer speeds over WiFi on the iPad when using 2.4GHz 802.11g and 5GHz 802.11n over
short distances (from a few feet, to help eliminate problems caused by noise and intervening walls, etc.). Users should also report their router type/brand and the type of security they have enabled (none, WEP, WPA), and the app/method they used to measure the speed.
For example, using a
Belkin Wireless-G router I can transfer a 60MB file from my Mac to the iPad in just over 30 seconds which works out to a rate of 15.8Mbps. That's using GoodReader on the iPad over an 802.11g network with WPA security over a distance of about three feet. After unmounting the connection between the devices (to eliminate caching) and quitting and relaunching GoodReader I can then read back that same 60MB file from my iPad to the Mac in just under 25 seconds or at a rate of 19.5Mbps.
So, the WiFi writing rate (write to iPad from Mac) is about 16Mbps and the reading rate from the iPad is just over 19Mbps.
I'm going to try the same over a 802.11n 5GHz Airport Exreme to see what differences I get.
