Like he has some sort of ability but not at the top level. Needs more space and time for his predictable patterns. Might do better in a weaker league. Some sort of a good physical ability but with very predictable patterns. An error a scouting team focused too much on more easily measurable + physical variables would make.
Do you really want all of the explanations be spelled out?
ps All variables are measurable to the exact same level of ease. But that depends upon the sophistication of approaches, understanding, etc.