I think the main things I considered regarding this was the fact that Christmas is not a staple of the plot. The movie can play out easily enough on Thanksgiving, or any day really.
That the story takes place around Christmas, and has some Christmas decorations doesn't make it a Christmas movie. I think it's a really good action movie.
Essentially a man is visiting his wife and daughter, which happens to be during Christmas. The office party is hosted by a Japanese company to, primarily, celebrate the closure of a recent deal. Due to the timing, they essentially decide to merge the celebrations in respect of the location and culture.
Not to mention it was released in July. If you take away the setting of Christmas Eve, it's simply an action film on par with Con Air.
Odd question, maybe something more for the Garden or whoever to answer... but when you see gods and such "wreathed in divine fire", how exactly do you all see it in terms of colour and such? Has it ever been given a firmer description?