I kind of got the impression that Redcloak's physical stats were all average/mediocre/dump (probably strength dump) and his mental stats were all pretty good, with wisdom obviously being much better than all other stats as he casts from that. To me he seems to display above average charisma and intelligence (particularly intelligence) and his general abilities in the comic center around intelligent strategy, leadership, and using his own/Team Evil's knowledge to maximum effect. To be fair, hobgoblin society appears to be pretty obedient, but I still think leadership comes into play. Whereas he doesn't display any indication of any of his physical stats being particularly noteworthy.