I am thinking the reason not to start with Ben Arfa is height. Ba, Ameobi and Best all good on attacking and defending set pieces.
Hopefully Ben Arfa starts today.
Nah, I don't think that's a good enough reason not to start him. We're not short on tall players anyway - Williamson, Ba, Vuckic, Krul, Santon, Obertan, Best all well over 6 foot.