Interesting analysis which looks at the correlation between the expected points vs xG difference (which is expected goals minus expected goals conceded)
E.g. getting a xG diff of 1 is more likely to result in getting 2 points
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Now let's look at how the top 3 teams are doing:
As you can, City and Liverpool are seriously good at creating chances and not conceding many chances - which is resulted in us being well ahead of the rest.
Chelsea are good but they were massively over-performing all metrics earlier on this season before levelling off back to their norm.
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