Yeah Metacritic is especially useless in games with more spread out reviews (in this case due to Xbox marketing). Look at the review count disparity.
Opencritic is generally a lot more indicative. One scenario where Opencritic is worse is if one version of the game is poor or broken, artificially bringing the average score of the good versions down with it.
But ultimately both review aggregators pale in comparison to the "player consensus", which is something that you can't put a number on.