Doesn't sound like it but maybe someone made a typo in the coding used for figuring out if you should have the Inner Chamber emblem. My reason for thinking this is back when Halo Reach came out, I remember getting each and evey halo related nameplate icon, so their system (at least the old one) knows I own 5 of their 6 previous games, the only one I don't have, being Marathon. At any rate, it's totally possible someone set it to # = 4 rather than # <= 4 or for some reason, maybe a few of the games are not being counted correctly. Whelp, at least for now I have the Pathfinder emblem...