You've misunderstood Stief's explanation. Stief is refering to the hosts you're downlding from. You're downlding it as they are via "their" partial file sharing. If you're downlding an already downlded file from a no. of hosts rather than via partial files, then your speeds will be a little more consistent.

Edit: Sorry Stief, last I looked you'd gone offline. I was surprised to see you suddenly reply. Your explanation would have been much better than mine!