He can't be worse than Starbury, right?
Oh, I wouldn't say that. For all his troubles shooting, Marbury was actually decent running the offense and playing defense. The problems came from him not being able to hit the broadside of a barn with his perimeter shots. Since Williams was always a significantly worse shooter than Marbury (especially from midrange), even in their prime, I would not assume he would be any better after the missed time.
Williams is also a couple years older than Marbury, and has likely lost even more of a step.
So yes, Williams could in fact be worse than Marbury was.