This tool does not make the correct matematic that the actual game does.
Example:
In Combo simulator: Impact + Meteor (Smite) + Finale (Smite) = Total MP 3600
Ingame Combo: Impact + Meteor (Smite) + Finale (Smite) = Total MP 500 MP
The tool should have a way to set a determined ammount of MP, to actually reproduce the combo as it should, with any type of canceling skill that reduces the final MP consume