Board Thread:General Discussion/@comment-31251903-20170901040748/@comment-1824272-20170901042120

Fiona was born in 2016, Cynthia was born in 2012. Ace Combat 7: Skies Unknown takes place in 2019. That means that Fiona is 3 years old and Cynthia is 7 years old.

Therefore, these girls are not Fiona or Cynthia, unless they're rewriting everything from AC3.