I really consider that a moot point as
I don't see either of Bancroft or Renshaw doing better opening than Smith though, as they're just not very good.
And that's a big concern. I still think my Head opening and trying to bazball, and Smith 5 idea might have some merit.
Four is the position Green is most suited to batting in style wise and is where he's scored his runs domestically. I think as
@morgieb said he's doing something different (certainly his shot selection is to great), and you might right he's too nervous.