Note that if it played out like that there's a lot of give in relative Warfare skills still. Nityana turning it into close combat still doesn't actually settle who would be better in a fair fight. Nityana might've been underperforming in an attempt to bait Riza into getting close enough to end it this way. Riza (still) not knowing if she at least pushed Nityana probably wouldn't help her opinion of the #%*+# any