I think you may be mistaking Activision for someone else or maybe for their earlier selves.Well activision aren't exactly noobs when it comes to making epically awesome games.
I reckon they'll pull it off no problem.
Milking Guitar hero so hard for 5yrs until it literally kills itself is hardly a sign of creative inspiration.
They did the same thing with Bizarre (Project Gotham, Geometry Wars). They were a successful racing games dev, got bought by Activision, made one not-so-bad game and then got shut down. So they were around making games for 19 years before being bought by Activision, 3 years later they shut down.