Call of Duty Infinite Warfare vs Battlefield 1 Sources

http://moneyinc.com/call-of-duty-franchise/
http://www.statisticbrain.com/call-of-duty-franchise-game-sales-statistics/
http://www.gamespot.com/articles/e3-2002-activision-signs-infinityward/1100-2866756/ http://moneynation.com/how-much-money-has-every-call-of-duty-gamemade/  http://www.vgchartz.com/gamedb/?name=battlefield&publisher=474&platform=&genre=&minSales=0&results=200 http://www.looper.com/14207/fans-already-hate-call-duty-infinite-warfare/  http://vgsales.wikia.com/wiki/Best_selling_game_franchises https://en.wikipedia.org/wiki/Firstperson_shooter#Origins:_1970s_to_late_1980s  https://www.youtube.com/watch?v=EeF3UTkCoxY https://howlongtobeat.com/game.php?id=934
http://steamcharts.com/app/311210   http://www.playstationlifestyle.net/2014/07/23/ea-battlefield-similarlyaligned-to-call-of-dutys-3-year-development-cycle/  http://www.polygon.com/2015/11/11/9715060/call-of-duty-black-ops-3-sales-advanced-warfare-ghosts
http://www.eurogamer.net/articles/2016-11-07-call-of-duty-infinite-warfarelaunch-sales-down-nearly-50-percent-on-black-ops-3 http://www.hardcoregamer.com/2016/11/07/over-59-million-hours-spent-onbattlefield-1-in-opening-week/234617/
https://en.wikipedia.org/wiki/Call_of_Duty
https://en.wikipedia.org/wiki/Battlefield_(series)
https://en.wikipedia.org/wiki/Infinity_Ward
https://en.wikipedia.org/wiki/Treyarch  https://en.wikipedia.org/wiki/Sledgehammer_Games  https://en.wikipedia.org/wiki/EA_DICE
https://en.wikipedia.org/wiki/Visceral_Games