I don't think that WotC's sales forecasts are based on Call of Duty, so probably they are not projecting 10 million+ units. But it bugs me that they want to sell more and are implementing TB combat, given that JRPGS are changing combat systems from TB to real time because it sells more.
Because they are changing RTwP to TB(Or both in the same game), that sells more, not RTWP to Real time.
That said, I´m perfectly ok that they continue making games that are not ARPG in real-time because there are enough of the former already to choose from. I hope games with alternative mechanics different from ARPGs in RT could still have profit margins so we could have more of them.