Sony launch lineup for the first 2 years of the PS3 and PS4 is abysmal in comparison to what they're expected to have in the first 2 years on the PS5 cycle. You can't compare it. If anything they had GoW2 and GT6 after the launch of the new consoles.
that wasn't really intended tough
The new Santa Monica IP got cancelled & could have been an 2014/2015 title.
Uncharted 4 needed a director change & reboot of the development
You had several delays that Sony problably underestimated in this generation
the first party studios moving from the cell architecture to the Ps4 architecture, building their new Engines.
if sony had the games ready, they would have released them in the first 2 years aswell. they didn't deliberately wait for the third year, before pumping out all the big blockbusters
also if the Order 1886 and Driveclub wouldn't have failed, they could have been the blockbuster titles of 2014 and 2015