I keep seeing this argument but taking the playstation into account.
PS1 - PS2
Tekken vs Tekken Tag
Cool Boarders vs SSX
These were simple upgrades on existing games the main improvement being graphical fidelity and action on screen.
PS2 - PS3
Timesplitters vs Resistance
Again the main upgrade is fidelity, HD and multiplayer online.
PS3 - PS4
Resistance vs Killzone SF
Assasins Creed vs Black flag
Larger worlds, more fidelity, share button , touch pad and QOL upgrades.
For this gen there are arguably MORE innovations than previous with haptic, adaptive triggers, faster loading times, improved fidelity, improved speeds online, the help guide on games, activity cards.
Like what do people want?