Better hitter: Andrei Kostitsyn vs. Sergei Kostitsyn
Here are two players that are widely inconsistent in their hitting game. But, when they are on their game, they are very good hitters. (Neither is anywhere close to the likes of Clutterbuck, though)
Andrei hits very hard, but doesn't have the acceleration and the technical repertoire to be an elite hitter; Sergei has better acceleration and a better repertoire while not hitting as hard as his brother. Who is the better hitter?