I thought it worked better in concept than in exectuion. They didn't need to have the same names - Superman could have just said "mother" and pleaded for his mother to be saved. That would have done it given Batman's parent issues, the coincidence of the same name wasn't needed. But I was like, whatever I'll go with it...until they did a replay of the flashback to when she was killed. I got it the first time. Replaying it at all, much less that much of it, actually took me out of that moment completely. Maybe it's because I was just deathly weary of flashbacks at that point.
Speaking of which, the first person shot of Martha when she was, um, shot, with the pearls draped over the gun, was unintentionally hilarious.