User blog comment:FairyRaven/Fairy Tail Chapter 448: Fight the Power! Review and Commentary/@comment-24264679-20150817160616/@comment-3290324-20150817162620

@Misk Erza hadn't activated SO when she was fighting Kagura. So she was pretty much fighting with no training/power up unlike her comrades. If she had activated SO with Kagura instead of waiting to use it with Minerva, I doubt it would've been much of a battle. Not to degrade Kagura or anything because she's clearly a bad ass and I think she could be on Erza's level now. :D