and has armor because in the comics she fights
a diferencia de los otros diseños de fanaticas que imitaban a los ponis.. esta version es como se veria en el comics cuando luna obtenga su poder de nightmare moon
y usa una armadura por que en el comics ella pelea (no me la inmagino peleando con vestido de reina >.<)
If a useless pony as rarity (in terms of battle) can beat Luna in one on one. Then assuming that increase 5 to 10 times her power (i think it's more than that, but well) just think about a 5 times stronger Luna. I think that neither Celestia nor chrysalis, not even together can stand against Nightmare Moon. But this is only supposition, it's not like the show has many clues about that.
I personally always thought that Nightmare Moon was the strongest villain in the show only surpassed by the elements of harmony. I hope i was clear enough, and this help you.
But that is only because Luna is younger and it isn't fully grown.
On the other hand Tia has been in a peaceful kingdom for over thousand
years, so she has not trained or fought. In other words it has lost experience
in battle. while Luna was there during the years of chaos before being banished,
and while she was in the moon she didn't lost any experience (and perhaps she
became stronger to complete his revenge)
Could be a fair fight, but i'm with Luna
¿Ella va a salir en los comics?
There's something familiar about this design, but I can't quite put my finger on it....
Either way, HOLY CRAP! Way to pull off Luna's Super-Powered Evil Side!