Imo, the top 10 wizards at the current arc, based on the chapter 489;
1) Acnologia
2) Zeref
3) Igneel powered Natsu
4) August
5) Eileen
6) DF Gajeel
7) Dimaria ( Age Seal )
8) Laxus / Gerard
9) Gerard / Laxus
10) Bradman
The tiers in fairy-tail ( Ishgar), to me;
God-like tier ( Acnologia, Igneel in a healthy and normal state)
Legendary tier ( Zeref and Igneel powerd Natsu)
High spriggan tier ( August, Eileen and DF Gajeel)
Average spriggan tier ( Average dragons like Atlas or Motherglare,Bradman, God Serena, Wahl, Dimaria, Jacob, Ajeel,Brandish, Ninehart)
GoI tier ( TO Sherria, Base Natsu, Base Gajeel, Erza, Hades, Mard Geer, Hyberion, Wolfenheim, Warren)
Wizard-saint tier ( Tartaros Gildarts, Jura, Makarov, Bluenote, Jose, Ur)
S-Rank mage tier
Average mage tier
Low mage tier
August destroyed multiple mountains? Are you blind or just actually retarded. And his attack wasn't seen from a country away, the panel clearly showed the FT guild to the left and Lucy and Natsu didn't travel that far.
Gildarts clearly is stronger in raw power. But his ability to negate magic puts hims on a whole other tier. He's top 3 in the fairy tail universe.
Lol XD, until Gildarts doesn't appear in this arc, we can only use Tartaros Gildarts' feats to rank him. Back then then he was on wz-tier but in the current arc wz-level characters are fodders ( Base Natsu oneshotted Bluenote) now!!! How powerful he is now, is just speculation based on hype and character potrayal but there is no evidence or fact to that
Dimaria and Jacob have hax magic but hax only works on opponets who are weaker than them or at best who are equal! Jacob wanted to use his transport magic against Acnologia but August stopped him because he knew it was sensless. The same logic should be applied with Dimaria's age seal otherwise alvarez empire could have killed Acnologia without much trouble!!! Kagura was already able to sense Dimaria's age seal, btw.