Talk:ADFX-01 -Block1-/@comment-84.106.171.235-20140816192938/@comment-1824272-20140816213628

The ranks are a measure of performance. They're used to compare an aircraft to another aircraft, to tell which one is better. The ranks go as follows, from worst to best:

F -> F+ -> E -> E+ -> D -> D+ -> C -> C+ -> B -> B+ -> A -> A+ -> S -> S+

Obviously, F stats are the worst, while S+ stats are the highest.