So, cuff canting is used in order to keep the boot sole flat on the snow, irrespective of the cuff. Therefore, it would make sense to your bowlegged friend to perform that cant operation and his boots will perform better.
I doubt the same is true for you, as you dont have your friend's bowlegs. (I hope)
If you think there is an issue with your alignment, get it checked. I personally wouldnt want to ski bumps with a poor alignment, as proper knee mechanics will serve to protect from having them replaced prematurely.