User blog comment:B214/Chapter 475 thoughts/@comment-24499036-20160229120024/@comment-25111584-20160229133332

Cana had potential too. Look at what Bluenote did to her. Potential doesn't mean fig. Some boundaries should just not be crossed. Defeating a supreme entity who singularly dominates over and aspect of nature as powerful (maybe even most powerful) as time is not something the Sky Sisters should be able to achieve, ever. God Slaying Magic notwithstanding.

And Sky Sisters' potential doesn't compare to Natsu's, whose rival is Gray. Those two, alongside Gajeel, have the steepest growth curves, aside from maybe Ultear and Jellal. That's kinda been established. Of course, I personally think Gray is out of the running. However, Ultear could always summon Jellal instead. Him, I wouldn't mind using Third Origin to seal the Goddess of Time. Not defeat, seal. Defeating is out of the question. She's literally god-tier, somebody who rivals Ankhseram.

@B214: Leaving aside the fact that my comment was a jab at how retarded Ultear, Gray and Lyon are acting, there's a difference between choosing to fight fodder over a Shield and having only fodder to fight. Plus, Mira already showed herself to be far above the likes of Gray even when they were fighting fodder. .-.