It's just a random list of recent and biggest Sony, Ubisoft, MS games plus GTA and some random recent AAA games.So those are the largest staff lists of all time?
I assume it should feature the games with the largest headcount and budget but not sure, made the list of games from memory -so I may be missing important ones- and then added the Moby Games data.
It was just to see by comparision the amount of people who worked on Concord is bigger than most recent AAA games, which could imply a higher cost, specially those whose budget is public. But didn't.