If it's technically possible, I'd say to go out with PS3, however, there's not as much gain unless TLG is going to be a +3-5 million seller (which I doubt). You have God of War next month (ridiculous) then you have TLOU in June (ridiculous) then you have Beyond to close the year along with 3rd parties's biggest games like GTA5 and this gen's last COD.
Ico started on PS and got moved to PS2 for technical reasons...
SotC started on PS2, but was clearly pushing the limits of the hardware, and was held back in many areas...HD re-release on PS3 shows this...
The team seems to have a track record of being overly ambitious, which is probably praised at first, then turns into a big head-ache when the art has to be transformed into millions of triangles for a player to control lol...
So yeah, I'm actually not really thinking ND should be at PS4's launch. Killzone or Gran Turismo for the graphical showcase, TLG shortly after, and then start spacing out WWS titles every Fall/Spring accordingly. Sony needs to space out gaming releases for PS4, some years were just full of too much awesomeness...