In my opinion it is generally a bad idea to speculate loosely because there are a lot of factors at play. You have barely defined the question and not set up any quantitative way to compare the two situations. You didn't even define what you mean by a bat breaking. BRT already stated the main tools you would use to approach such a problem so I won't repeat those but I think it would be impossible to solve this problem unless you simplified it by making some assumptions. If you want people to do all the leg work for you try posting on physicsforums.com.