After last chapter with the poor performance of Viernes i decided to make a post about the Acnologia and the dragon gods. Let's do a analysis about what all the dragon gods feeled about Acnologia.
Mercuphobia: Was afraid of Acnologia but just hided in a Atlantis like city, not so afraid as others i will mention below.
Aldoron: Too big to hide so was the only one who fought against Acnologia, got his ass beaten by him but survived to tell the story.
Selene: Was so afraid of Acnologia that fled to another dimension LOL.
Viernes: Was so afraid of Acnologia that transformed himself into a concept so he couldn't hurt him LOL.
Ignia: Says he is stronger than Acno after his death.
While i think Mashima wouldn't disrespect Igneel's son with a performance as bad as Viernes, he still wouldn't beat Acnologia because i don't believe his fight will give him credibility enough to do that, Mashima is currently lacking creativity for that as we all could see. As i said Mercuphobia was afraid of Acnologia but not so afraid like Selene and Viernes. Aldoron was the most chad of them in that aspect but it could be only because of his size anyway. It would be awesome if Viernes survives last chapter and get more development in next arc, but at this point don't think it's possible. Didn't mentioned Dogramag because it would be pointless as he is stated to be the weakest dragon god.