How often do you see such phenomena in NPD charts where the older installment resurged AFTER the release of the newest installment.
All the time, really. Classic halo effect. New game announced and promoted causes related games to get sales boosts.
It's the power of franchises. New games get boosts from ingrained awareness and affinity. Old games get boosts from new game announcements and marketing/promotion.
I think this is similar situation to World of Tanks
WOT was first on xbox360 and didn't move any serious amount of consoles despite having tens of millions of accounts on pc.
What do you consider a "serious" amount of consoles?
It's true that the impact of any one game on sales of hardware is, in the vast majority of cases, impossible to know for certain or prove. There are outliers of course. Halo on the Xbox, Call of Duty 2 on the Xbox 360.
But this downplaying of big titles not moving consoles argument always tends to ring a bit hollow to me. A library of content is only the aggregation of a number of single games and services.
Is the combination of One X, and the graphical improvements it promises, combined with the launch of PUBG, back compat, game pass, EA access, etc etc enough to sway an incremental few hundred thousand to a half million people or so to pick up an Xbox in the US market this holiday that otherwise wouldn't have? I certainly think it's possible.
Having the new box and a big hit game like PUBG is certainly better for the ecosystem than not having them.
Same arguments can be made for the PS4 and Switch as well. Having revised/refreshed/repackaged hardware and big new games tends to help drive incremental volume of hardware. That's somewhat self evident.