3d/4d Ultrasounds

Calla • Married Aug 2014. TTC since Jan 2015. Type 1 Diabetic. IUI in July 2016 got us pregnant with twins! 👶🏼👶🏼 Due 4/20/17
Both of my fraternal twin boys are doing well. Currently 27w and was told by my OBGYN that our babies are fat!!! Is 2.5 lbs each really that much at this point in pregnancy? 
So funny to see their faces, really see how unidentical they are, and I'm laughing about a spitting imagine of my husband (baby A) and then myself (baby B). 
Do you agree?