u must bring into account that Assault cannon has two extra shots and it is rending so it has the ability to pop landraiders the most heavily armored tank in the game and its better at taking down a landraider then a lasscannon but the Autocannons dose hav range which is good for wanting to take down transport but personally i take Assault cannons they hav great versatility and that its the space marines greatest strength

 

Assault Cannon= has a 15% chance to get a Penetrating hit on a land raider.

Lascannon= has a 10% chance to get the penetrating hit on a land raider

5% chance doesn't worrent (In my opinion) me paying the extra points for an assault cannon.

 

Alright thanks Red for answering the question.

Now the Assault cannon (not a twin linked Autocannon)

4(2/3)

AV10= Pen = 1/3 Glance = 1/6
AV11= Pen = 1/6 Glance = 1/6
AV12= Pen = 1/6 Glance =
AV13= Pen = (1/6)(2/3) Glance = (1/6)(1/3)
Av14= Pen = (1/6)(1/3) Glance = (1/6)(1/3)

If it Pens the most advantages results(s):
(1/3) chance of destroying them
(1/6) Immobilising them

If it Glances the most advantages result(s):
(1/6) Immobilising

AV10 Transport

A Assault Cannon has the following chance of inflicting and advantages result on a transport
(4(2/3)(1/3)(1/3))+(4(2/3)(1/3)(1/6))+(4(2/3)(1/6)(1/6))

= 8/27 chance of destrying it and a 2/9 of making it immobile.
= 51.85%


AV11

A Assault Cannon has the following chance of inflicting and advantages result on a transport
(4(2/3)(1/6)(1/3))+(4(2/3)(1/6)(1/6))+(4(2/3)(1/6)(1/6))

= 4/27 chance of destrying it and a 4/27 of making it immobile.
= 29.62%


AV12 (Note: An Assault Cannon can only Pen Armour 12, needing a 6 to glance which rends they adding another D3 etc

A Assault Cannon has the following chance of inflicting and advantages result on a transport
(4(2/3)(1/6)(1/3))+(4(2/3)(1/3)(1/6))

= 4/27 chance of destrying it and a 2/27 of making it immobile/destroying a weapon
= 22.22%

AV13 Note rending comes into play, once rolling a 6 on Armour Pen getting another D3 so (2/3) of the time you will pen (1/3) of the time you will glance.

A Assault Cannon has the following chance of inflicting and advantages result on a transport
(4(2/3)(1/6)(2/3)(1/3))+(4(2/3)(1/6)(2/3)(1/6))+(4(2/3)(1/6)(1/3)(1/6))

= 8/81 chance of destrying it and a 2/27 of making it immobile/destroying a weapon
= 17.28%

AV14

A Assault Cannon has the following chance of inflicting and advantages result on a transport
(4(2/3)(1/6)(1/3)(1/3))+(4(2/3)(1/6)(1/3)(1/6))+(4(2/3)(1/6)(1/3)(1/6))

= 4/81 chance of destrying it and a 4/81 of making it immobile/destroying a weapon
= 9.87%

A TLAC by Comparison only wins out against AV11, cant damage AV14 but with twice the range could get at least twice as many times to shoot.

AV10= 49.38%
AV11= 34.56%
AV12= 19.75%
AV13= 4.93%

So Comparing an Assault Cannon with A Twin Link Autocannon, what have your experinces been with them? do you use them at all? Going on the positives and negatives you can think of what one would you choose given the choice??