User blog comment:Zathronas/Speculative author, Volume 3: Ruby Rose/@comment-25405817-20141105164758/@comment-25411051-20141105165644

If Penny actually hurts Ruby instead of just winning a match she just might have a logic meltdown.

Penny vs Grimm Up to Goliaths. I see nothing but smoking Grimm caucuses evaporating on the ground. She is at least as powerful as Coco's minigun and it destroyed Death Stalkers and Never Mores like they were nothing.