There's no doubt the new 7.3 beats the old 460 but the final version of the 460 had 400 ft lbs of torque and with some minor mods,a little more than that...Not that far off in torque from the newer engines..
Following its 1983 reintroduction, the 460 received fuel injection for 1988; while remaining at 225 hp, the update significantly increased torque output; after further updates in 1992 and 1994, the final production version of the 460 produced 245 hp and 400 lb-ft of torque.
I'd take the new 7.3 in a heart beat..