When i perform a full price update on my collection(s) i tend to get quite a lot more games updated.
this happens in multiple collections.
That is strange indeed. Will ask our developers to look into this.
I do have duplicates, both in this collection. But also in other collections. So it might be reporting the total number of entries it updates for my user, and not just the collection.
This has been fixed now.
Can you try again and let me know if it works for you again?
Today the number of games updates were less than the total, which makes sense, not all has changed 
thx