It was really funny when they tested Kyurem black on PO, since it could just tear through anything that wasn't a bulky Steel type. Thankfully, Scizor is a bulky Steel with priority STAB.
Similarly, White Kyurem basically destroys everything under the sun. Rain's a different matter, though. One of Scizor's big advantages is that Kyurem's still Ice-type, so that Bullet Punch is not only good, but ridiculously good against it.