Yeah, ok. If you were confining your comment to SC only, then you could (weakly) argue it's not a judgement of football ability, I suppose.
Of course, then, the line "Congratulations Luke Davies-Useless of being the shittiest rookie in history" is in the SC context only, isn't it? On that basis, shouldn't it be literally correct? Without even looking it up, I bet there have been many other rookies with shitter SC seasons. Possibly even Relton.