I just re-ran it in Chrome ingongito mode to get the following:

  - 400 requests (adds about 1 per second after that)
  - 6.8 MB transferred
  - 6.1 seconds

Then I ran it AGAIN, and got this:

  - 307 requests
  - 4.6 MB
  - 9.03 seconds

You're right - it is WEIRD!