A cutscene in Call Of Duty: Ghosts appears to be a reskin of a cutscene near the end of Modern Warfare 2.

YouTube user “satantribal” has put the two side-by-side:

Meanwhile, industry analyst Doug Creutz of Cowen & Company has told Games Industry that the lower-than usual review scores for Ghosts compared to the rest of the franchise won’t affect the game’s sales.

This is partly because they come too late to influence pre-orders, but also because the franchise is largely “critic-proof”, said Creutz.

"We think CoD has become such an embedded franchise that it is somewhat review-proof.

"We think of CoD as being like EA's Madden NFL, which continues to sell similar unit numbers year in and year out, regardless of reviews; Madden's Metacritic has ranged as low as 78 in recent years,” he said.

"Given that CoD changes only incrementally from year to year, we think reviewers have become increasingly less likely to give very high review scores due to a certain degree of ennui with the franchise."

However, Call of Duty will face serious competition next-gen thanks to games like Titanfall and Activision's own Destiny said Creutz.

"To the degree that Call of Duty may become a bit of a 'been there done that' experience for gamers, we think it is vulnerable to losing share as new product enters the market; even if a lot of that share goes to Destiny, as a third party title it will carry a lower margin for [Activision], and we think bullish 2014 [earnings per share] estimates assume Destiny will be more incremental than cannibalistic.”

Finally, Activision reports that it has shipped US$1b worth of Call of Duty: Ghosts copies to retail.

"Ghosts is an amazing game which ushers in the next generation of Call of Duty," said Activision publishing CEO Eric Hirshberg.

"This is the must have launch title for the next generation of consoles, and we expect Call of Duty: Ghosts to be the most successful launch title for the Xbox One and PS4 by a wide margin.

“In fact, according to GameStop, Call of Duty: Ghosts is their most pre-reserved next gen title."

You can read what we thought of Call of Duty: Ghosts here.