I actually (unfortunately!) think it would be 4-3 in Jon's favor in a Jon/Neda final 2.
I think either Sabrina or Rachelle or maybe even both would go with Jon just to deny Neda the win.
The other two possible final 2's i think you're probably spot-on with though!
I know you don't want it to happen but i'd still prefer Jon to get eliminated next by Neda. It would be a valuable life lesson for him and the look of sheer disappointment and shock on his face would be priceless!!!
