Bayern Munich has a +55 and the sum of the other positive goal differentials in the Bundesliga is 55. Celtic has a +46 and the sum of the other positive goal differentials in the SPL is 20.
Two years later at about the same point in the season the numbers are similar. Bayern Munich has a +53 and the sum of the other positive goal differentials in the Bundesliga is 55.
In 2015-2016: Paris Saint-Germain had a +83 goal differential and the sum of the other positive goal differentials was +75. Celtic had a +62 goal differential and the sum of the other positive goal differentials was +36. Hapoel Be'er Sheva won Israel's Liga ha'Al last season. Through 14 games of 2016-2017, they lead by 9 points. Their goal differential is +31 and the sum of the other positive goal differentials is +27.
Maccabi Tel Aviv leads Israel's Ligat ha'Al by 32 points. They have 4 games left, and second place Maccabi Haifa has 5 games left. Maccabi Tel Aviv is +64, and the sum of the other positive ones is +33.