Natsu oneshotting Bluenote is a feat on par with low-diffing a Jura-level opponent, putting Natsu's offense on par with someone like God Serena's. On top of that, we know that Fire Dragon King spells have what it takes to knock out a Spriggan 12 member like Jacob. Honestly, I don't think there's a single person on this list that would remain standing after a FDK spell.
The hits Wahl took from Laxus were arguably stronger than anything Laxus threw at Hades. Honestly, his durability is probably the best in this match-up. Now you might say that this was due to his resistance against lightning, and that's a fair point. However, Wahl is also a heavy hitter. He has the ability to trade blows with Laxus and knock him bac, and also has the ability to cast Etherion. Just a chunk of etherion is enough power to make Natsu more powerful than Jellal during the Tower of Heaven arc.
Kyouka's durability is such that Erza with her dual katana can take down. People like Neinhart, Natsu, Wahl, and Chelia, who have the means of outclassing attacks like that, can easily take her down with a couple clean hits. Essentially, she'll need to rob the 5 sense from everyone here at once, otherwise she stands a real good chance of simply getting oneshotted. She needs to pretty much do this immediately before Wahl gets the idea to use assault mode or Natsu pulls FDK. Wahl specifically, is a robot. I would be surprised if he could have extra senses like radar or sense electricity, and it's debatable if she can take his senses away at all.