I was surprised Dyn weren't faster. Drilling down, I wonder what was going on between 25th Feb and 11th March? http://www.dnsperf.com/provider/Dyn
Dyn's early results were not representative of our network or service. This was as a result of the limited number of nodes currently testing and the location of these nodes. We found a routing issue between Azure and ourselves via one carrier leading to elevated results for a short period of time.
There's been great commentary on here about providers showing as fast because of the proximity of the tests. This will only be rectified by adding more monitoring and a broader base of test locations.
I know jimaek is working on getting new locations online - if anyone here can assist in providing or sponsoring test locations, I encourage you to reach out to him.