Pieces like this remind everyone that celestia isn't lazy, she is not just sitting idly by while her ponies die. When push comes to shove, a literal god joins the fray and almost destroys someone out of pure, unbridled rage. Also, i would have put blood on her armor or some dents or something to make it that touch more frightening. Would love to see one of luna doing the same, maybe a more bloody seen, but maybe something more drastic like her sister just moments from stopping her?