If you use them right, yes they can. This is the biggest problem I have with the anti-stats crowd. Most of their problems with stats and deeming them as less useful or stupid/pointless tends to come with either not using the right stats, not using the stats properly, or just plain not understanding them. There are plenty of times to criticize stats usage or rightly say that stats can't always address specific questions or issues that are raised. The point of stats is that they're objective and impartial. One of the biggest points that moneyball was making was that a lot of the inefficiencies that the A's exploited existed because scouts and baseball managers did nothing but trust their eyes and got lied to by them. No stathead worth their argument is going to tell you that we should stop watching games and just read data sheets. But at the end of the day, if my eyes say one thing, and the numbers say another, I'm leaning toward trusting the thing that isn't colored by folksy baseball truisms that often end up being utterly wrong.