The Aran Calculator V3.5

Keep in mind that you can't always have your Critical count maxed. At some point, it will have to be zero.
For example, if you have 9 out of 10 Combo Critical Count, Final Blow Chain will out DPS Overswing Chain at level 17 instead.
Critical Count : Final Blow Level (That out DPSes max Overswing Comb)
10 - 19
9 - 17
8 - 15
7 - 13
6 - 11
5 - 10
4 - 8
3 - 7
2 - 5
1 - 4
0 - 2

Another example is that if you have 1 Overswing and 1 Final Blow, Final Blow chain will be more DPS until your Critical Count is 7. This is the more important aspect, though; early Fourth Job damage as opposed to mid.

Yeah, good point. I guess the only REAL way to show which is better is to just see how likely it is if you have a high amount of combo. I guess, still, the best build may be Overswing>Aggresion> and Final Blow. I guess it depends on how the person feels =P