I wrote in my NFC RBBC article that the primary split will be between Ward and Graham, with Graham getting the majority of the 3rd-and-short and goal-line type carries, with Williams spelling both guys occasionally and serving as injury insurance.
Regardless of what Raheem is projecting now, I'll stand by my prediction until proven otherwise. Ward will still get slightly more overall touches than he got last season, and produce accordingly. He's still by far the best receiver out of the backfield on this roster.