I thInk with Rory its down an overall ability problem, he has some skills, that is not in doubt, but whether they are good enough to let him make it at SPL level is the question.
We have all seen him score at reserve level but he lets himself down considerably when he gets his chance during his games in the first team.
The trouble with Rory is that his plus points are much fewer than his negatives, other players have weak areas, IE Roy Mcbains right foot, Russells passes, however both these players have greater plus points, Look at the brill goal Roy got in Aberdeen, and the work Russell does off the ball.
Rory in my mind has not got what it takes.