Morcombe said:
Has it been stated that the Spriggan 12 are as powerful as Acnolgia? Cause I'm pretty sure he would beat all 12 of them if he faced them 1 on 1 maybe all 12 against him at the same time might beat him but defo not 1 on 1.
Until Gildarts actually shows up we have no idea what his true strength is in comparison to the 4 Gods of Ishgar but I'm almost certain he will be stronger than 2 - 4 and will most likely equal Serena, at this point I'd even say Gildarts is stronger than Makarov and Makarov is ranked somewhere between 6 - 10 in the Wizard saints.
If Gildarts isn't at least equal to the Spriggan 12 then I don't see why Mashima would have left him out of the Tartarus arc, the only reason for not having him there has to be because he would have been to powerful for Tartarus to handle, same here the only reason not have him here in this arc at the start is so he can do a "Big Damn Hero" moment when he's badly needed.
Oh I'd guess Achnologia to be stronger, he's supposed to be on par with Zeref (whom cannot die... I don't get it but oh well). That was just to have a limit on Gildarts.
As for the rest, we'll have to see but I doubt it.
Natsu and the other young ones are the heroes, apart from Blueno I can't remember Gildarts doing much, maybe he did though?