What we can concur from these points totals, as well as using the averages per division the total skill in the individual division. If the best and worst teams are in the same conference, it is likely the skill levels of both divisions exacerbated the divide between the two scores. What has to be factored in is that the Pacific, and Central only have 7 teams (therefore their averages are more heavily influenced by extremes and outliers). This can be observed this season, where Colorado dramatically lowered the average score per team in the Central.
In 2014, the Atlantic division was statistically the worse performing division following the lockout shortened season. The average team in the Atlantic averaged 87.6 points per team. The highest scoring, and therefore most competitive division was the Central division, where teams averaged 98.7 points per team.
In 2015, the lowest performing division was the pacific division. whereas the highest performing division was the Central again. This is statistically significant as teams in the Central play the pacific more often than Eastern Conference teams. What you could discern was that the Central took many potential points away from the Pacific. The Pacific averaged 87 points, whereas the central averaged 99.4 points per team.
in 2016, the Metro become the most competitive division by a large margin. Teams in the Met averaged 96.12 points per team, whereas the Pacific (being the lowest) averaged 86 points. Both these averages are not skewed by outliers, as the median numbers are also extremely similar to the average.
In 2017, the lowest performing division is slightly skewed. Colorado put up the lowest numbers in recent history. That being said the Central did not underperform dramatically, sitting with 88.57 points. So realistically 89 points. The Pacific totalled 89.42. And for back to back years, the Met topped the league average with 96.125 points per team in the division.