If Keeton doesn't recover well from his injury or sustains another one then I'd probably agree. But outside of injuries at this point I'd say playing NFL ball for either one of them is a pretty good probability (if "playing" is at least making a roster). However, not necessarily at the QB position...
At this point I'd say Hill has a better chance at being at the QB position in the NFL than Keeton but they are both very good athletes and if willing could find their way on to a roster in another position....