Rozier and Morris are anti-ball movement.
Two main differences:
1) Morris makes his shots;
2) Morris also contributes elsewhere, too (defensively).
That's my main problem with Rozier - he's pretty much useless outside of an occasional iso scorer due to his lack of BBIQ and playmaking/defensive abilities.
EDIT: I guess he is a good guard rebounder, but I seriously do struggle to identify any other strength of his from a skills standpoint.