Seems like one of the only possible strategies of beating them, other than crushing them inside (the tack the Pelicans seem to have taken).

However, the only real loss in this deal is the pick; Brewer's plus/minus might say he's a decent defender for the Rockets this season, but he's one of the worse heavy-minute rotation players league-wide. He's a horrific long-range shooter, can't create a good shot for himself almost ever, has lost several steps defensively and takes so many chances on that end that he will inevitably be a defensive liability against better teams in the playoffs, and has even gotten significantly worse at his one once-elite skill, finishing in transition. Replacing his shots and touches with Williams's can only lead to higher offensive efficiency. And the Rockets have the league's second-best offense already, so, yeah.

Williams will obviously not be the force in Houston that he was in LA, but his shooting and creative abilities against a defense likely sloped away from him because of Harden or Gordon's creation on the other side of the floor will make him fit fine.