Hmmmm. I'm torn. On its own I wanna say 92-93, but comparing it to another open world new IP by a sony company trying a new genre - Horizon Zero Dawn - I'll say it'll be just a step below so I'm going with 87.
I loved inFamous and everything about this game looks great. I love Sucker Punch but I always thought they came across as a scrapped, mid-level developer compared to bigger companies like Naughty dog, Guerrilla, and Insomniac. Then again, I never saw Insomniac as a AAA developer until Spider-Man (Which is weird becuase Ratchet and Clank are some of my all-time favourite games and Spyro holds a place in my heart. Point is, they were always A or AA based on game size and budget, a middle-tier dev team with smaller-scaled but tones of fun games).
So yeah this generation we've now had three sony companies known for one genre and franchise branch out into new genres and new IPs (or at least new IPs for them). Guerrilla Games with Horizon after doing Killzone, Insomniac with Spider-Man after doing Ratchet & Clank, and now Sucker Punch with Ghost of Tsushima after doing inFamous. Also, Sony Bend with Days Gone, but that wasn't as much of a success. Not bad, but not great.
Man, Sony really is knocking it outta the park this generation. New IPs, great games, lots of variety. Can't wait for PS5! This looks like a hell of a swan song.
My Console Library:
PS4, PS3, PS2, PS1, WiiU, Wii, GCN, N64 SNES, XBO, 360
3DS, DS, GBA, Vita, PSP, Android
Top 6 this generation:
Bloodborne, Sekiro: Shadows Die Twice, God of War, The Legend of Zelda: Breath of the Wild, Dark Souls III, Red Dead Redemption II, Rock Band 4