Board Thread:Episode Discussion/@comment-24993958-20181026055523/@comment-25936766-20181101000007

SirGauoftheSquareTable wrote: Honestly, that's my question too, but considering how little damage the turrets actually did to the Sphinx, I think they would have just been an annoyance and possibly counterproductive by disrupting RWBY's rhythm. They one-shot killed Manticores.

That alone would've been a huge help for RWBY, letting them focus more on the Sphinx itself.