Some "triple A" games not selling well

So meta has a list with top 50 best selling games in the meta app BATMAN;BAHEMOTH not in the list Metro is on spot 48 In the case of batman I understand some got it for free and that didn't count but still ... I'm not a big fan of any of these but that's just my taste I also don t understand why some games are In top 10 list what do you guys think about this