frantti and van aalen are visibly not fit for a team of vakif's caliber; busa and thompson would do ok if the rest of the team is very good, but they cannot save a team that isn't performing well.
I think van Aalen isn't the one to blame, she barely gets a real chance this season and is still young for a setter. She would do great with a better team around her! Busa on the other hand showing again she isn't made to play for a top level team. She's got the experience, but can't even stabilize the reception/ defense...