he's weak physically, magically, and in mana absorption/capability, oh and he's kinda dumb as well
the only strong point he have are 1. he can use any relics at full potential and 2. his godly luck that make him look like a master strategy
as far as the novel goes only one character know that he's really weak (which is arc) but arc still perceive him as a master tactical of sort due to his god luck