It's not that she can totally ignore the armor and energy armor of her opponents. It still has limitations.
The reason it was deadly was because she combined the properties of ignoring armor and armor penetration ability into a single burst attack.
That's why she could kill someone at S-rank even though they had a protective field around their bodies.
Souta thought that she was the only A-rank expert who had the potential to kill him. Well, in the end, she was still an A-rank, and one powerful shot from him would be enough to heavily injure her.
He ended the test after he thoroughly defeated Franklin and Isabella. They were good, and their combination was extraordinary as they understood each other.
They even managed to force him to use some of his aces.
"Good job; I think that the two of you will pass the physical examination with a flying score." Souta praised them.
"Thanks." Isabella bowed her head.