What is considered a big baby?

Ti
At what size is your baby considered big?
I've even told that 7 pounds is average but out of my 6 babies, only 2 of them were in the 7 pound range. 
Both coming in at 7 lb 14 oz. the rest, we're all 8 lb plus. 
I keep seeing posts of newborns born at 5 and 6 pounds, and people commenting how big those babies were.
Is my perception weird? Or do I just have GINORMUS babies...???