Nice link to modern munitions.
Now read what it says are the targets for a WW2 American 1000lb GP bomb, especially the last target > medium cruisers 
. Not just the 1000lb GP but also the 250lb, 500lb and 2000lb GP bombs which all list ships as targets. 
(Image removed from quote.)
Now what were you saying? 
AN-M65, http://www.skytamer.com/AN-M65.html
Cruiser decks were 25-50mm thick.
cool chart, i wish it stated on the bottom where it was from. do you know if this was actually a military chart or is it a chart created by a researcher? not doubting its authenticity or accuracy, would just like to know how much weight it carries by pedigree if i ever chose to use it in future discussions.
what that chart fails to depict though is the tips used by the individual bombs. were they tipped with a hardened armor piercing nose? were they tipped with the propeller type surface detonating nose? etc etc.
if the tips were designed for penetration beneath the deck of the cruiser then they had to be of a penetrating or armor piercing design, if they were intended for surface detonation then the bomb would not penetrate the armor of the deck of the ship (or the top armor of the tiger). if the penetrating/armor piercing bomb does not hit a hardened target it will sink many feet into the earth before (if at all) detonating, losing most of its destructive capability to absorption into the earth. it shall leave a pretty hole, but it shall do little if any real damage.
in addition, the deck of the cruiser may have been armor plate, but the guns equipment and people above the deck were much softer targets and very susceptible to damage caused by non-penatrating munitions. as one more foot note to attacking ships, it is important to remember that many ships although armored still retained the wooden style deck to reduce on weight and preserve resources (IE aircraft carriers).
now the assumption must be that if you are bombing infantry and light to medium armored surface vehicles then the rule would be you will kill and destroy more targets with a ground/surface level detonation bomb (non penetrating/armor piercing) than you will with a bomb that doesn't detonate until after it has penetrated many feet of earth. if you are targeting the tiger in a field of infantry then you send in planes carrying bombs that will defeat the armor of the tank before detonating and you target those units against which your load out will have the most effect.
now most of the bombing done in aces high is against buildings and light or medium armor, thus the bombs being dropped (as there is no separate load out per bomb type) are GP with a standard surface detonation tip.
i really don't have the vocabulary specific knowledge to describe this in any further detail. i will leave it at this, if all bombs penetrated heavy armor why would they have the need to create bombs that would specifically pierce armor? if there wasn't a real need for it they would not have wasted the resources in mass producing it.
as a side note to all of this have you seen this sight yet?
http://www.wwiivehicles.com/default.asp its got tons of specific vehicle and weapons information. it is sparse on story detail but awesome in its descriptions of the vehicles specification themselves. as the pages reference the historical documentation used to derive its information from i feel fairly assured upon relying upon the information found within.
