He wasn't doing too bad as a 3rd/4th line center. I actually prefer him up the middle than on the wing. He hasn't shown much since being moved over.
In fact he's -4 in the last 5, and only has 1 assist to attribute to his being moved. I wouldn't call him going to the wing 'more successful.'
Edit: make that -3.
The guy is dynamite in the shootout though.