Of course when a team that needs starting pitching acquires an ace, safe to say they will make out a winner.
Cleveland's pitching this season has been capable, which is not a word you want to use to describe the starting rotation of a potential playoff team. They are 19th in the majors in ERA (4.00) and 18 in Opponent's OPS (.716). Jimenez should help lower both of these numbers.
This deal also takes a ton of pressure off of Justin Masterson, who is the team's current #1 starter. While Masterson could certainly hold his own against CC Sabathia or Justin Verlander, he now gets a much more favorable matchup against, say, AJ Burnett or Max Scherzer.
Cleveland now has one of the best 1-2 punches in the majors with Jimenez and Masterson. Add in Carlos Carrasco and Josh Tomlin, and suddenly Cleveland has the starting pitching to compete with anyone down the stretch.