User blog comment:FairyRaven/Fairy Tail Chapter 398: The Final Duels, Review and Commentary/@comment-7418318-20140901145939/@comment-24744901-20140901153525

The whole thing with Laxus being able to one shot Tempesta, was the fact that no one expected Laxus to beat him so easily, as well as Minerva, she was expected to take Erza to her limits, but after three punches thrown she was seen on the ground crying, which also wasn't expected. As for the whole Lucy thing, I really can't say for sure, but my guess is that some people liked Jackal and believed him to be the one of the strongest, and him being beaten by a sudden power up was not expected and pretty much disappointed a whole bunch of fans.

As for now I think it is because everyone is used to Tempesta just being beaten up to the point where they don't even care if he is one shotted :P. Has even once seem menacing after he lost to Laxus.