No, there is no way that they will be picked on. Their parents are super stars. Now if someone like me or you (I'm just assuming here that your parents aren't superstars...?) was to be named that, we'd get our butt's kicked. They won't for that reason alone.
I do agree that it's cruel. Don't just follow the wacko baby naming trend just because you're famous. I can pretty much guarantee from common sense that 1/2 of these kids wouldn't have these names if their parent's didn't make movies or whatever.