Uncertainties over how delay will affect PS4 bundle orders.
All versions miss their planned November launch.
6GB RAM and Q8400 processor now required to even get the game started.
But creative director is unconcerned that Assassin's Creed 4 could cannibalise Watch Dogs sales.
Options include Watch Dogs, Driveclub, FIFA 14, Call of Duty: Ghosts, and Killzone: Shadow Fall.