User blog comment:Mode Sau/Strongest God Slayer/@comment-25324252-20151004064304/@comment-7418318-20151004074148

They aren't supposed to counter Dragon Slayers, they are supposed to counter Gods.

That their magic can't be eaten by Dragon Slayers under normal circumstances is just a by product, but not their purpose for existance.

And what does it matter that we didn't see them win any battles? Except Orga did win battles in the GMG, although it was only against small-fry.

We didn't see Jellal win a fight either prior to going up against the Oracion Seis. Did you consider him pathetically weak because of it? Probably not, so "they didn't win" is a poor argument to judge someone.

They might be disappointing compared to the hype they received from Zancrow's boasting, but they are not weak and certainly not pathetically weak.