Still seams to be a problem with the career profile stats.
not all games are showing the right level of completion.
as an expample - https://www.halowaypoint.com/en-gb/games/halo-spartan-assault/xbox-one/service-records/players/sir%20ragnhild
showing that I have silver stars on missions. yet I have the 117 achievement for gold stars on all missions.
No rush, focus on MCC first please 
Note - this also seams to be the same problems as to why TMCC is also showing me one thing in the game and another thing on waypoint.
In the game i have completed all Halo 4 missions on legendary, the game tells me this too under the missions completion.
Yet when looking at the achievements in game, it says that im missing 2 missions for lone wolf legend achievement. This is the same as what is reported on waypoint.
There are clearly at least 2 systems that are not in sync. if the game reports that i have completed all the missions then waypoint should reflect this. as should achievements.