Not really, similar code was used in MW2 at the following offsets:
006DBBE4: 'menu_xboxlive_barracks',0
006E3FE4: 'XBOXLIVE_TOTALUSERCOUNT',0
006EB06C: 'User is logged into xbox live',0
006ED354: 'XBOXLIVE_PLAYLISTISNEW',0
006EEC90: 'XBOXLIVE_LOGGEDOFF',0
006F4540: 'XBOXLIVE_MUSTLOGIN',0
006F5674: 'XBOXLIVE_PLAYLISTUSERCOUNT',0
006F6268: 'Script_ShowGamerCard called on non Xbox platform',0Ah,0
006F65C8: 'menu_xboxlive_lobby',0
006F7A50: '@XBOXLIVE_PARTYENDED',0
006F8260: 'XBOXLIVE_PARTYENDED',0
006FC790: 'menu_xboxlive',0
006FCCE8: 'XBOXLIVE_KICKPLAYER',0
0070275C: 'XBOXLIVE_SIGNEDOUT',0
0070573C: 'menu_xboxlive_privatelobby',0
007058DC: 'XBOXLIVE_NETCONNECTION',0
00709100: 'XBOXLIVE_SIGNEDOUTOFLIVE',0
00710A38: 'menu_xboxlive_lobbyended',0
00715AE8: 'XBOXLIVE_CANTJOINSESSION',0
0071651C: 'menu_xboxlive_findgame',0
00719A9C: 'XBOXLIVE_MPNOTALLOWED',0
0071B880: 'exec default_xboxlive.cfg',0
0071EB98: 'set systemlink 0; set splitscreen 0; set onlinegame 1; exec default_xboxlive.cfg',0
0071F4B0: 'true only if this is an xbox live game AND we',27h,'re the host, otherwise false',0
0072099C: 'XBOXLIVE_SIGNINCHANGED',0
007223E8: 'menu_xboxlive_teams',0
00724810: 'Opening private party host reconnect dialog in menu_xboxlive.',0Ah,0
0072CE0C: 'XBOXLIVE_VOICECHATRESTRICTED',0
0072D3D0: 'Player ',27h,'%s',27h,' logged out of Xbox Live',0Ah,0
0072EF78: 'true only if this is an xbox live RANKED game AND we',27h,'re the host, otherwise false',0
007346A8: 'XBOXLIVE_PLAYLISTISOLD',0
007386E0: 'menu_xboxlive_partyended',0