I had made a mistake in my computation of the Pythagorean. There wasn't an issue with the formula itself; I hadn't calculated the win/draw probabilities out to enough goals. I increased the upper limit to ten to account for the heavy results seen in the Eredivisie and recalculated the Eredivisie table. The results were amazing:
|SC Heracles Almelo||34||54||49||56||50||+6|
|Roda JC Kerkrade||34||56||60||47||45||+2|
|ADO Den Haag||34||38||59||30||34||-4|
|Willem II Tilburg||34||36||70||23||28||-5|
Just as in the Spanish league, the Pythagorean estimates very well the point total of the team with the extreme goal statistics. You would expect a team with 106 goals scored and 20 conceded to win 85% of the points available, which Ajax did. You would also expect such a team to run away with the league title. The fact that they did not underscores just how phenomenal Twente's season really was.