So for clarification, cause Aero will be the confusing skill. It only attacked at the end of the opponents (my) turn. It's not every turn (both players) as that is not specified in the stats. It says "every turn".

So just to understand where we are at based on moves played:

Aero:

Lightning: 200
Ashe:200

Speed:

Lightning: 170
Ashe: 200

Def

Lightning: 150
Ashe: 200

Returns

Ashe: 190
Lightning: 140