Board Thread:General Discussion/@comment-25397424-20150121015939/@comment-26028321-20150122180549

Though I imagine Cinder probably could out power Pyrrha regaurdless, My guess as to why Mercury noted her as being able to take her no problem is because she (likely) uses glass as her weapons and Pyrrha can't effect them.

Also while it's not impossible at all, we have no proof that Weiss couldn't use the stuff she uses in season 2 prior to being at beacon. We actually don't have too much detailed info on what they learn while at school. We know they learn History, Grimm, they have a combat class, and a class that for some reason would send students out to collect sap (cooking class?)