@Monad:
I didn't decide how the power levels should be based on some whim. It's based on the manga's given statements. Where Brandish effortlessly demolishes an island with a thought, and August is said to be by far stronger than the rest of the Spriggan 12. Meaning he's far beyond her level, and killing someone like Gildarts who is not capable of casually destroying islands would be easy. It's not hard to see this connection. At this point, if you continue to ignore that August should be far higher in power, you're just in total denial.
Acnologia oneshotted Gildarts with a hit to his side. He only survived because Acnologia didn't try to finish him off. And his dragon form would've instantly killed.
Given how inconsistent the Spriggan power levels are, I wouldn't hate this fight so much regardless of Gildarts being able to put up a fight, but he shouldn't be winning. August already survived being shattered to pieces by Crash, so Gildarts shouldn't have had much of a chance of winning, even with Cana's help. It was a mistake for Hiro to have August demolish the Oracion Seis so easily. A 6v1 of them plus Gildarts would've made a good enough fight for August to lose in, by FT standards at least. But he had to go and make August so op and able to easily oneshot all his opponents until suddenly Gildarts can fight evenly.
The worst part about it is that August didn't use anywhere near as much magic as a King of Magic should. Despite having so much magic at his disposal(which is undeniable, he used sleep magic against brandish, a heat pillar against Natsu and co, a laser on Mirajane, showing that he retains the spells he gains through copy magic) he used nothing but a single laser shot and one time stabbing Gildarts for offense. That's it. You'd think that someone as versatile as August would try to adapt to Gildarts' magic, by using magic that can't just be broken down by Crash, for example using flight magic for an advantage or trying to use energy attacks that might hit him when he's not prepared and able to use Crash to block them. But no, he doesn't do shit, Hiro simply refused to have him use magic.
He could've even used Fairy Glitter after he negated Cana's use of it, and countered her cards easily. Or Crash, or a magic barrier(as he did to protect Ajeel), or many other things.
I know that the plot demands August must lose, but the way he lost was horrible. Crash, from an artificial arm or not, shouldn't have affected him since he already copied the magic.At best it'd shatter him again, but since he already does not die when shattered by Crash(where basically his brain, heart, and whole spine would all be totally destroyed) a mere explosion would not be able to kill him. He'd probably have to run out of magic power entirely and then be finished, but given the fact that he never really showed a lack of stamina in the whole fight, it shouldn't be a problem.
Another dissapointment of this fight is that we never get confirmation of August's full power. Since just a moment ago he was casually countering Crash, the readers can never be sure what the ultimate spells he could achieve really were, which is a huge letdown.