I see that on tents also,that one might sleep 3 if you don't have any gear,more like a 2 man tent.I have a 10x10 and it says 6 but believe me 3 is full if we ant hunting,then 2 is much better.
I also have a 16x20 and it is really good for 4
5 if you want to push it.
It says it will sleep 10,man that would be a hoot with 10 in it.
Pappy