Henry played on the wing before becoming a striker. Ben Arfa can play on our wing. After some time he may then 'graduate' to his supposed preferred position upfront.
Is that a good enough explanation for you?
Not really, two completely different situations. Not to mention two completely different players; one who was absolutely made to play CF in this country.
Hatem doesn't like playing on the wing because that role comes with defensive responsibilities. We're just going to have to accept those limitations, embrace the fact that his attacking talents will shine more out there, and slowly he'll adapt, hopefully.