Ok this is how it works. At the start of the season I worked out statistically where each team should finish.
From that you deduct the finishing position to give the value added , VA.
So if a team should have finished 8th but came 2nd they get a VA of +6.
However to take into account relevance of finishing position we then add 1 to that and divide by the finishing postion to get the positional value added PVA.
So in the above situation they would get a PVA of 3.5 ( 6+1 ) / 2.
So in Division 1 Roma get the highest PVA finishing 7 spots ahead of predicted, they also have the highest VA of _2 . Barcelona & Bayern are second in PVA which shows the settled nature of the division. Other notable performances are Porto , Schalke and Liverpool , who could have been in relegation trouble but all kept afloat.
Lowest PVA was Man Utd who just underperformed Tottenham who had the lowest net VA. The relegation of Atletico Madrid is the stand out for me as the other relegated teams were those predicted at the start of the season , which begs an interesting question.