For one longer stroke doesn't make more torque displacement does a 0.40" 400 (408 ) RB and a 408 LA has the same torque producing ability because while the crank will multiply the cylinder pressure the RB has a bigger piston (more cylinder pressure) equaling out the the effect.
Secondly its also wrong that an equally build 340/360 that the 360 will kick the 340 or 318 for that matter in the nads because of torque, maybe cause of bad setup but not because of torque because a 400hp engine no matter if its a 2l 318 340 360 440 540 all can accomplish the same amout of work in the same amount of time thats the definition of horsepower= move 33000lb 1 foot in 1 minute. Or cars weight/quarter mile/E.T.