halo mcc's placement represents its disastrous launch in 2014 and the all-time low for not only the series but microsoft.
current day mcc is fantastic.

1-10 the best games of the year
11-20 fantastic games and/or games that uniquely represent the year in games.
21-26 solid games, capcom is saved by monster hunter
27-28 games that did active harm to the form
29-30 mcc and driveclub tier, driveclub was also just unfinished/unplayable
31 and on did not finish, did not like, did not care. a ranking with little informed context so grain of salt etc