[Neus]

I don't know if there's a perfect solution for this sort of thing. People with the biggest number want to always win even if the realistic difference between their number and their opponent's number isn't particularly one-sided. On the flip-side, taking stats out of the equation does lead to godmodding. My advice is to get a mediator like a GM as an in-between and hope that everyone involved are good enough roleplayers to accept a loss every now and then.