Ingram is not chopped liver. With a good OL, and a scheme committed to the run, I think he could be a 1000 yd rusher. I think Khiry is a bit more versatile, but about the same talent level as Ingram.
With the job that Ingram has been doing as a receiver this year and as a blocker, I'm not sure I would say Robinson has more versatility. Just my opinion.