[sw293]

Winning alliances are generally built on three bots that can cap. You can win with two capping bots, but it is much, much harder, in part because everyone knows what your third bot is going to do before the match starts.
You also need to be able to defend well to win a regional. Therefore versatility is critical. Part of the reason the 1279 alliance took the Trenton regional was that their bots did both offense and defense well in the elimination rounds. They combined an offensive overall strategy with defensive tactics like pushing a bot away from a goal when the opportunity presented itself.