Of course it does as you can see from the two instances shown. The releases are based on Central European Time, what is shown on the users statistics is based on the system time (local time). It also depends when the avast program starts its 24hr period or if it is a rolling 24hr period. So far in the last 24hrs I now have only 194 streaming updates.

We see this very frequently in the forums and it is a very rare occasion when the number received in the last 24hrs is the same.

Then you add to the equation they may also receive a VPS update, which contains all of the previous streaming updates (received or not).