RWBY's reactions would vary greatly. Ruby, being the optimistic and open - minded leader, would likely approach the fanfiction with enthusiasm. She might enjoy seeing new storylines and relationships for her and her team. Weiss, on the other hand, with her high standards, may nitpick at some of the inaccuracies or what she perceives as poor writing. Blake, who has a more introspective nature, could find herself lost in thought about how the fanfiction reflects on the real RWBY world and its characters. Yang would probably be the most vocal, either loving or hating different parts of it depending on how exciting or ridiculous they are. Overall, it would be a mix of emotions and reactions from the RWBY team towards the Death Battle fanfiction.
Well, Ruby would probably be all wide - eyed and interested. She's always curious about new things. Weiss might be more judgmental, looking for proper grammar and good writing. Blake could be intrigued by different interpretations of the characters, while Yang would likely be entertained and might even laugh at some of the more out - there scenarios in the fanfiction.