He's already said that he will pay up.
You've basically been granted a tremendous, tremendous advantage by him from the outset and still have the gall to complain. Stop being a whiner, you've got a leg up on him already.
I've clearly stated that I will pay up if I lose both people understanding of the bet and that I don't expect him to pay up unless the same applies to him.
Currently, I'm minus 7 on his understanding and tied on mine. How is that any advantage to me?
And more importantly, what "tremendous advantage" do you mistakenly think he's offering me?