User blog comment:DiegoAnime3000/It's also a gun! -Team CRDL/@comment-24631732-20140613224732/@comment-3146930-20140614031022

It is possible that all the big Grimm were being distracted by RWBY and JNPR. If the members of CRDL for example met up early and banded together, they could have easily taken down some of the smaller Grimm. I mean Weiss early on scared off a pack of Beowolves with a forest fire, so CRDL could have used similar tactics to scare the Grimm off instead of fighting directly.