Application speed (as opposed to Capacity Speed) is the actual real end-to-end speed that a TCP application will achieve for the connection being tested. This will encompass all the inherent TCP flow control delays as well as quality invoked delays, such as packet loss. In other words it is an accurate measure created by a test process that ensures the data flow matches the requirement of the application such as a Video. The problem with Capacity Speed tests is that they measure the capacity of the pipe not the speed. The testing user is sometimes not aware of this and gets confused when the actual results of downloading a video or music file do not match the results of the speed test conducted earlier.