Outlaws are the favourite ones in this game especially when they are both at distance 1 and Renegade chances to win are not so dissimilar from Sheriff (who must kill everybody exactly like the Renegade, the only difference is that he may choose the order, at least in theory).
If Sheriff is 1500 I would say something like:
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Bang! Stats Database *Agg. The Duel 2015* e MyBangBang! Stats Database *Upd. The Duel 2015* and MyBang