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Do Bulletins Stack?

27 Jun 2013, 01:13 AM
#1
avatar of NorthWestFresh

Posts: 317

I was just looking at the bulletins and I noticed the veteran infantry bulletin which gives you +2% Accuracy and 3% Health in one bulletin then there is two other Separate bulletins giving 2% accuracy and 3% health. So theoretically you could choose these three bulletins for a total of 4% accuracy and 6% if bulletins stack.

Can anyone answer this question?
27 Jun 2013, 03:47 AM
#2
avatar of sumpfriese

Posts: 4

In coh 1 bonuses from abilities, vet, ect stacked reliably so there was a good system to deal with multiple modifiers on a unit value. So yes they should stack.

Now mathmatically stacking works in another way, 3% more health is not relative to the base health, but to the health the unit has after other modifiers could allready have been applied, so if i have a unit with 100 hp and have a 3% and then another 3% health increase that results in

(100*1.03)*1.03 hp = 103*1,03 hp = 106,09 hp =/= 100*(1.03+1.03) hp

you might say its only a tenth of a percent difference but with different values the effect can be more significant. In vcoh PE offensive vet gave 15% accuracy bonus, at vet 3 offensive vet they had an 52,0875% bonus (1.15³) instead of the 45% you might expect.

Worst example was the pak-bug where you could apply the modifiers for cloaking a pak multiple times which could then 1-hit a king tiger. It gave 25% damage bonus while cloaking, now this applied 10 times wouldnt result in 250% damage bonus but instead in 1.25^10 = 9.31 times the damage (831% bonus).

now some games choose not to use this (natural) mechanic of stacking, i.e. wc3, but seeing as vcoh used it there is no reason why coh2 should be different
16 Aug 2013, 07:30 AM
#3
avatar of MoonHoplite

Posts: 85

Bump.

I'd also like to know, perhaps an official confirmation?
16 Aug 2013, 09:28 AM
#4
avatar of Nullist

Posts: 2425

Permanently Banned
Its called either additive or multiplicative stacking.

If 2% bulletin and 2% bulletin stack to 4%, its additive. If the second 2% bulletin adds only 2% of the initial 102%, its multiplicative.

I certainly hope they are multiplicative, or else many bulletins become very problematic when stacked.

Theres also the possibility that the "stronger" bulletin overrides the weaker.

Relic will have to tell us how they did it...
16 Aug 2013, 15:23 PM
#5
avatar of VonBlade

Posts: 29

Surely it would be easy to test. There are a few bulletins that speed up tank build times. Anyone who is far enough along could just get a stop-watch and build a tank with multiple x% quicker bulletins. That would answer the general "how it's done" thing, and would be free from RNG and thus more accurate.
Only Relic postRelic 16 Aug 2013, 15:57 PM
#6
avatar of pqumsieh
Developer Relic Badge

Posts: 267 | Subs: 8

It multiplies, and yes bulletins do stack.
3 Jul 2014, 21:35 PM
#7
avatar of akula

Posts: 589

It multiplies, and yes bulletins do stack.


does multiplies mean more than additive?
3 Jul 2014, 21:45 PM
#8
avatar of morten1

Posts: 368

A nevroed tthread comtaining a nullist post... Cool
3 Jul 2014, 21:55 PM
#9
avatar of Gecko2k3

Posts: 91

It multiplies, and yes bulletins do stack.


Same bulletin 3 times stack?
Seb
3 Jul 2014, 22:11 PM
#10
avatar of Seb
Admin Black Badge

Posts: 3709 | Subs: 2

So 3 bulletin for 3% accuracy means 27% accuracy?
3 Jul 2014, 22:15 PM
#11
avatar of Katitof

Posts: 17875 | Subs: 8

jump backJump back to quoted post3 Jul 2014, 22:11 PMSeb
So 3 bulletin for 3% accuracy means 27% accuracy?


More like if 100% is base and you add 3%, then you'll have 103% as new 100% and bulletin will add another 3% to that new 100% value which not is 103% and so on.

Simple, right? B-)
3 Jul 2014, 22:21 PM
#12
avatar of wooof

Posts: 950 | Subs: 1



More like if 100% is base and you add 3%, then you'll have 103% as new 100% and bulletin will add another 3% to that new 100% value which not is 103% and so on.

Simple, right? B-)


not when you explain it like that. its just 1.03^3

1* 1.03= 1.03

1.03* 1.03= 1.0609

1.0609* 1.03 = 1.092727 = 1.03^3

the difference between multiplying and adding is really negligible though (in this case, with 3 bulletins at 3% the difference is .2727%)
3 Jul 2014, 22:46 PM
#13
avatar of Strummingbird
Honorary Member Badge

Posts: 952

What about the -10% suppression bulletins? If I stack 3 do my units get suppressed at 73% of the normal rate? That does seem like it would make quite a large difference.
3 Jul 2014, 22:51 PM
#14
avatar of Southers

Posts: 111

What about the -10% suppression bulletins? If I stack 3 do my units get suppressed at 73% of the normal rate? That does seem like it would make quite a large difference.


Yep, but that's all your bulletins used to get about 1/4 less suppression on one unit.

Bulletin effects are still negligible.
3 Jul 2014, 23:05 PM
#15
avatar of DanielD

Posts: 783 | Subs: 3

27% is not negligible. Frequently there are cut-off points for various things, like how adding just 1HP to a tank would make it take 1 more shot to die. It often takes 1 full burst from an MG to suppress a squad, if they received 27% less suppression they might be able to take a full burst and keep moving, and that is a very large difference in how engagements play out.
3 Jul 2014, 23:55 PM
#16
avatar of ATCF
Donator 33

Posts: 587

So if you combine 2 penetration bulletins with ZIZ AT gun that has 180 penetration at long range, does it get 246.6 penetration with VET 3 + those 2 bulletins combined (30% penetration from VET 3 and 4% & 3% penetration bulletins combined)
4 Jul 2014, 00:42 AM
#17
avatar of elchino7
Senior Moderator Badge

Posts: 8154 | Subs: 2

I´m more interested in knowing if same bulletins stack.

Pqumsieh plox.
Seb
4 Jul 2014, 01:19 AM
#18
avatar of Seb
Admin Black Badge

Posts: 3709 | Subs: 2

Oh yeah I'm so tired, thanks for the correction. Obviously it's not 3*3*3 = 27% but 1.03 * 1.03 * 1.03 = 1,092727 (9,2727%) instead of 1,09 (9%) if that was additive.
4 Jul 2014, 10:22 AM
#19
avatar of Gecko2k3

Posts: 91

I´m more interested in knowing if same bulletins stack.

Pqumsieh plox.


Im still waiting the answer of someone....
4 Jul 2014, 12:09 PM
#20
avatar of MirLo

Posts: 5

So, how much pen does my puma have when i have 3 x 4% pen for pumas :P
Maybe they can take on them IS-2s =)
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