I haven't actually found a CBRakion on the ladder, but it does seem like a problem. I think I can deal with it with Serp and Starmie. I can also bait out CC for Chandy to come in. Not to mention it has trouble switching in on anything. I'll try defensive Scor but I think it'll be outclassed by something like Skarmory, who can bait out the CC better and set up hazards.
Do I still OHKO Garchomp and DNite? If so I'll switch for sure. On my itouch so I can't open up my damage calc.