Up to recently, if your computer was shut down for a while (overnight, for example), it received a big number of streaming updates when it went online again (could be hundreds of updates). Those updates were sent one after another - and it was quite slow (it could have taken a few seconds to deliver one update - so if you multiply it by the number of missing updates, it could take quite a while).
Recently we did some improvements and started to deliver "multiupdates" - so if you have been offline for some time, you won't receive hundreds of small updates when you start the computer, but instead you'll get one big update (or a few of them). Those bigger updates deliver exactly the same content as the big number of small updates would have, they are just aggregated into bigger packages.
The statistics page shows the number of packages transferred via the "streaming updates" channel - it doesn't distinguish between small or big packages, each counts as one. So that's why you see a low number there - your computer was offline for a while and received one big package. If your computer had been online the whole time, it would have received hundred small packages instead - and the number on the statistics page would have been bigger; the content you received is the same though.
