Truth be told, I got a lump in my throat at the end of that second episode — an achievement for any show so early in its run … Given how much “Smash” has going for it, why am I trying to beat back my fears about this Broadway soap opera, which astutely combines song and dance with character journeys that, for the most part, have drive, coherence and emotional resonance? Because I’m afraid that being the anti-“Glee” might not be enough for “Smash.