Justice League-StarCrossed

[The Mighty Thor]

I think alot of that may have been because of the size of their opposition in this episode. They were able to cut loose and tear through the opposition because, even if they took out 3 dozen Thanagarians, there were hundreds more still coming. In most episodes they are fighting, at most, a small handful of villains at a time, and if they just went all out, the episodes would be over in ten minutes.

Apparently, you can really deal out the pain when you are fighting off an intergalactic invasion force.