HOUSTON — In Steve Kerr's four seasons with the Warriors, the second unit has gone from a glaring issue to a source of pride. Kerr's "Strength in Numbers" catchphrase adorns billboards and T-shirts, car windows and rally towels. However, the playoffs have a way of exposing weaknesses that the regular season camouflaged. As Golden State prepares for Game 5 of the Western Conference finals Thursday night in Houston with the series tied at 2-2, it faces a sobering reality: The Warriors' imbalanced roster has left them vulnerable to the precise type of team they must defeat to reach a fourth straight NBA Finals. "It is what it is," Stephen Curry said.