baby weight

Megan
Today I'm 27wks4days pregnant with didi boy twins due 02/04/17. This app says they're only supposed to be about 1lb9oz. After measuring my guys this afternoon I was told they were on the bigger side for twins/gestational age. A weighed 2lbs6oz and B weighed 2lbs7oz. 
How big are y'alls babies?