Talk:World 1/@comment-24409121-20150120041235/@comment-24930367-20150120043019

If your fighter power is enough for Air Supremacy (AS+), then the game will tell you that (5 green kanjis during air combat).

If you don't have enough for AS+, but still enough for AS, then 4 green kanjis during air combat will appear, indicating that you obtained AS.

Combat page has the listed fighter power for some enemies and the conditions for AS+/AS.