Famitsu: PlayStation Store Digital Sales Feb 29 - Mar 27
[PS4] Dark Souls III - 50,475
[PS4] The Division - 36,255
[PSV] Romancing SaGa 2 (Download only) - 35,995
[PS4] Gundam Breaker 3 - 17,600
[PSV] Gundam Breaker 3 - 13,035
[PS4] Dead or Alive Xtreme 3: Fortune - 9,875
[PS4] Minecraft: PlayStation 4 Edition - 9,105
[PS4] Life is Strange - 5,765
[PSV] Hatsune Miku: Project Diva X - 5,240
[Source]
So Dark Souls III did pretty much exactly the same as Dark Souls II first week. We really can't neglate digital sales when we compare with last gen. It has changed very quickly.