So, as of now, you can eat a body and get over 100 HP. Not only do you get 100 HP, you also dispose of any possible DNA. In my opinion, you should be capped at 100 HP for cannibalism. I think it's OK for chickens to grant over 100 HP because (a). you're not disposing of a body, and (b). chicken HP can be stolen by other players and it is quite loud and obvious when traitors use chickens. Also, bodies are very readily available as a traitor, where as chickens aren't.