I like BF and CoD both, but in this case it feels like Activision doesn't know what to do with the franchise
"So our sorta-futuristic not-really-scifi game didn't do too well. Battlefield 1 was apparently alright, do you think there's money to be made in going back to older wars?"
"Well we'd just be ripping off BF1 if we made a World War I game, boss"
"You're right. What other wars are there? World War II perhaps..."
"... boss we...I mean, some of the best games in the franchise took place in World War II"
"Yeah, but this one's got support for 4K graphics. Prepare the $300 collectors editions with prepackaged Doritos and Dew"
"*sigh*"
"And the $1000 collectors edition with a personalized trainer by way of an angry prepubescent gamer with a terrible mic that will yell insults so exotic you'll be on Urban Dictionary in another window every match or two, horrifying yourself when you realize what language just came out of that kid's mouth."