Comment I doubt this (Score 1) 121
I live in Sandy, UT and the ONLY way to get over 22Mbps is to get Comcast's Extreme 50/10 package which is over $100 a month and it only became available 3 weeks ago. While the median income here is 80k/ year and plenty of people can afford it, I doubt 50% of the 100k people here upgraded to that package in the last 3 weeks.
In Sandy, Comcast has 3 subnets you can get assigned to. One of them would only result in 40/6 speedtest results and would never result in uploads over 7.5Mbps. While connections through another gateway would result in 62/12 results. So I changed the Mac address on router until I got connected to the good network. So I've run a few hundred speed tests in the last week. I'm sure others have recently upgraded have been running many speed tests too. As they trouble shoot why they aren't getting the full speed listed they will run even more tests than normal. Which has screwed up the "Average" for results in the area I'm sure.