One option is to give all the 2 points to the higher ranked side, but then the other team will complain that they are being treated unfairly by the ICC.
Considering the example of the yesterday match between Pak Vs Sri, if this rule was implemented, whom will ICC given the 2 points based on higher rank team ? Pakistan just a good match against England but their previous matches performance was a disaster . And same is the case with SriLanka.
I think no one can decide which team is stronger (in most matches) unless they actually play and perform on the day.