As others have said, the sheer span of the 7th gen platforms from 2005 through to multiple years into the 8th gen means there's a vast gulf between say Kameo or Resistance Fall of Man in 2005/6 and MGSV or Rise of the Tomb Raider in 2015, not just technically but in terms of genre evolution, gameplay tropes, etc.
Even though the PS4 and XBO technically covered a similar length of time (heck, even longer) this evolution was less dramatic as a lot of genres had more or less matured by the late 7th gen and saw mostly iterative refinement since then.
The 5th also bears mentioning as the 1993/4 was a completely different world to 2000/2001 in terms of the formation of 3D game design.








