There is nothing uniquely great about NFL players or television sets,
Yes there is. Imagine a television set. Now imagine the greatest television set. Imagine a footballer, now imagine the greatest footballer. Its easy.
Pleading that TVs cannot be great, or footballers cannot be great, yet a sky fairy can be, is pleading a special case. You won't get anywhere with that.
Where you run aground is that you are unable to describe what it is that makes a god great, other than describing it as "great+1".
And we've drifted far far away from the Jewish god, or the Christian god, or the FSM (sauce be upon Him).
You should concentrate on proving that your god, as described in your old book exists, not that there might be some logic somewhere that means there might be something like a god as described in the most general terms.
If you refuse to engage in anything but the Jewish god, then we can't allow you to depart from the Jewish god. Fair's fair now.