I can't answer that, but I think klonopin is a stronger med than xanax...although I think xanax might be one of the only meds in the benzo group I have not taken. I would ask your pharmacist to be sure.
I take 4 mgs of klonopin at bedtime to help me sleep and keep my crazy jumble of anxious nightmares away, and it works great for that.
Good luck, I hope it works for you!