Due to recently watching Melbourne Victory play this system and not knowing much about it would like to learn more?

My first question is why are Archie and Rojas staying in such wide attacking zones against Melbourne Heart?, I know in a traditional 4-3-3 that the 7 and 11 should be narrower than traditional wingers allowing the fullbaks to overlap and utilise the space out wide. As Archie and Rojas stayed in such wide attacking positions it seemed to me that they were closed down very easily, Or(especially rojas) putting useless crosses into the box with noone there.