User blog comment:IamJakuhoRaikoben/Sorcerer Magazine, Issue 41: May 2015/@comment-1153699-20150602132933/@comment-25324252-20150602200141

Where was it ever said that Orga is stronger than Minerva in offense? It was quite literally said Minerva is the strongest in the guild. As for Laxus noticing Minerva, Kagura, also an S-Class Mage, did not notice she was there until it was too late and was impaled on her own sword. Kagura and Erza together were not able to leave a scratch on Minerva until Erza activated her plot armor. It doesn't matter how durable Natsu is if he can't so much as touch Minerva. With Natsu's love of forecasting his attacks, Minerva can dodge it very simply. He will eventually wear himself out and Minerva can simply end it then. We know she is a master manipulator. Give her two opponents and im sure she can turn them against each other.