These are two different issues. One is how long do you wait at the belt for the baggage to arrive?
Other is how long does it take you to get to the belt?
I have found out too that in domestic there is not much of a wait at the belt.
On the international if there is a huge queue at immigration then it's obviously a less wait at the belt and depending on how long the queue is at immigration there may be no waiting for the bags.
I can't believe that on International flights that normally it takes 15 minutes to get up from the seat in the aircraft and to pick up the bags in YYZ.