These tests allow you to see for yourself the performance of a ChmuraNet seedbox server. All tests are run on a live server, one of the seven (7) on an average ChmuraNet machine, the performance should be typical of what you'd see as a ChmuraNet member, nothing has been done to tilt the balance. Given that, you should expect differences based on the day and time with its ebb and flow of load.
NForce rerouting is done via IPTables on your Chmura server, contact Support for details (there is a tool)