Well we cant acount for bad shots, A CV is prety darn easy to hit with a Jabo, and the average CT player is no newbi:)
I have adjusted obhect hardness in some of my Pac set up's in the past to acount for the lighter bombloads of Earler plane set's, it is realy up to the Staffer and his set up to adjust for this depending on the plane set/time frame.
The only counter I have to this is the observation that lighting the total amount neaded to kill the Cv from say 8k to 5K would reduce the total number of torpedos neaded to sink the CV to Just 2, and if you look at it from that aspect it may not be to hard to do, or rather to easy to do, a Ctach 22 it is, but again this goes back to the Staffer of the set up in question.
Get High, Get Over It, Get In On It, and Get Out.