The math is neglecting the Black Mages Astral Fire buff which stacks up to 3 times.
When you start with Fire III you gain full stacks of Astral Fire. On the other hand when you cast Fire II it only grants 1 stack of Astral Fire which requires another 2 Fire II for Raenryong to require the buffs I already got.
In my rotation all Fire II's and Flares are buffed with Astral Fire III and Raging Strikes
In Raenryong's rotation the first 2 Fire II's are gimped and the 3rd one has Astral Fire II and RS which leaves only his last Fire II at full buff as well as his 3 flare.
My damage is gonna be a straight up spike while Raenryong's will be a steady climb in which my rotation will end up with more damage overall because of it in the end. Since Raenryongs rotation gives me enough to overthrow him in a spike climb regardless of his initial advantage and that takes into consideration that all mobs are packed up so our 2 rotations could be casted at the same time.
There's a flaw in Raenryong rotation and that's the fact in starting with Fire II to begin with.
Flaw 1
It takes Fire II 3-4 mobs to beat my Fire 3. That's just the first cast and both are not buffed by anything. Note: I'm using Fire 3 to get Astral Fire III not for damage.
Flaw 2
Astral Fire III. I get it instantly while Raenryong wont have it until later in his rotation.
Flaw 3
Mobs have to gather. They aren't always neatly packed for convenience. I don't have to wait for them to bunch up since my Fire 3 targets 1 mob and by the time it in finishes all mobs will be on each other so starting with Fire II can miss mobs in that scenario.
