User blog:ErzaMirajane13/Who are the strongest?

Hi! I've always wondered who was the strongest in the world of Fairytail.. There are the Ten Wizard Saints, the Guild Masters, the ex-Guild Masters, the current S-mages and mages that are supposed to be S-mages but are not.. Well, can anybody help me decide? Who is the strongest Mage of them all?(And I mean not excluding the ones in other Guilds)