The temptation to make too much of Hizballah’s failure to unseat Lebanon’s Western-backed government in Sunday’s election is obvious. For past three years, the Shi’ite Islamist movement has been on a roll, withstanding an Israeli invasion, then paralyzing the U.S.-backed government, eventually humiliating its militias in a street confrontation, in the process winning veto power over cabinet decisions. Many had feared that the election would see the Iran-backed movement lead an opposition coalition to victory.