Thats exactly what you are saying. Using your model, if we finish 3rd at the end of the season, you are saying that posh should view the game against us as a good 3 points from a tough game against a strong team. AT THE TIME we played them, that couldn't have been further from the truth.
But we won't finish 3rd will we? In any case, pretty sure Posh classed their win away at our place as a great result.