First : http://fortoresse.wikia.com/wiki/Armory/perks

Increases the damage of everyone (yourself, teammates, & enemies) in its radius by approximately 15% for 10 seconds.

Increases the defense of everyone (yourself, teammates, & enemies) in its radius by approximately 20% for 10 seconds.

The % isn't the same but the cooldown is.

In a 1v1 with the same weapons, the player with the Shield win because of the defense increased by 20% and not 15% like the Rage.

I CAN'T see how the player with Rage is able to win the fight without taking cover, just standing in the perk like the other...

There are few of reasons.
1.tactic
assume you meet enemy with a distance you are about to confirm each other and use perk.
If your gun is type of long range with high accuracy ,then you can still win the battle.

2.Math
increase 20% def and increase 15% atk means
0.8*1.15
=92%
if you use sniper,it has no difference,3 hits kill.
17*3*0.92=46.92

3.limit to atk
High atk cause troubles.
In the game,when you fight with an enemy,I guess the average time someone dies is 3 seconds.It's very short already.Increasing atk will shorter the time.
Human reaction time is about 0.5.A fight in 2.5 seconds then die and wait for 10 seconds respawn is about okay.With atk perk it ends within 2.5 seconds is annoying.
Considering in team fight,you may have died before even shooting a bullet.

4.difference
Yes,under this comparison the def perk wins.But we shouldn't directly compare one factor and sum up.
For example guns,
In the weapon wiki,it shows the highest DWDPS is UMP45,there seems no need to choose other guns.However not all ppl using it,as the guns are different in other stat,which suits for some conditions and your style.
PVP concerning Time to deal 40 damage
team fight in long distance concerning DWDPS(long)
hunting a running VIP concerning DWDPS(short)
able to survive a long time concerning DPC

So what's the difference of atk and def?
Think it in other side,increasing atk means you will shoot ppl,increasing def means you will being shot,also means preventing die,preventing fail.

My point is,we should try winning rather than preventing fail.

Siuker a dit :

Think it in other side,increasing atk means you will shoot ppl,increasing def means you will being shot,also means preventing die,preventing fail.

That exactly what I'm thinking but both Shield and Rage prevent fail and cause trouble, by killing players faster or taking more damage, only Shield is more effective.

May be if you think def perk is more effective,then you can also pick it instead of atk perk.

besides,assuming def perk is now adjusted to be 15% def only,then which one would you choose,atk of def?
Most ppl choose atk but not def.
Our intuition has already explain why we choose atk.

Also,I think it can never be fair currently.I'm talking about the calculation in coding.
+15%atk +20%def=1.15*0.8=92%

We think when atk is added to 20% is fair enough,see the calculation
1.2*0.8=96%
It's not enough actually,if you want the outcome is 100%,then the atk perk should have 25%atk
1.25*0.8=100%

Math is interesting and weird.20% def requires 25% atk to counterbalance it.However ppl can also complain Rage>shield,25% atk is over than 20% def.....
The outcome is same when one side use rage,one side use shield.But it's different when only one perk is used.

Such weird calculation,writing a second type of calculation to fix it is easy,but generally the code ppl write is usually not the second type.And I believe the code is the first type,until Tig fixes it for purpose.

Last edit on 32/13/2015 25:61

Now I use the land mine because it's a bit hard to use the perk before being shot (and wasting time like that) .

Siuker a dit :

May be if you think def perk is more effective,then you can also pick it instead of atk perk.

besides,assuming def perk is now adjusted to be 15% def only,then which one would you choose,atk of def?
Most ppl choose atk but not def.
Our intuition has already explain why we choose atk.

Also,I think it can never be fair currently.I'm talking about the calculation in coding.
+15%atk +20%def=1.15*0.8=92%

We think when atk is added to 20% is fair enough,see the calculation
1.2*0.8=96%
It's not enough actually,if you want the outcome is 100%,then the atk perk should have 25%atk
1.25*0.8=100%

Math is interesting and weird.20% def requires 25% atk to counterbalance it.However ppl can also complain Rage>shield,25% atk is over than 20% def.....
The outcome is same when one side use rage,one side use shield.But it's different when only one perk is used.

Such weird calculation,writing a second type of calculation to fix it is easy,but generally the code ppl write is usually not the second type.And I believe the code is the first type,until Tig fixes it for purpose.

Last edit on 32/13/2015 25:61

Interesting point, I was thinking of it in my head like Shield was increasing "health" vs defense. But of course health and defense actually are two different things. And obviously 25% attack is not at all balanced when the other group is not using Shield.

And I like love your point about how if they were equal most people would pick the attack.

Siuker a dit :

Think it in other side,increasing atk means you will shoot ppl,increasing def means you will being shot,also means preventing die,preventing fail.

When I first saw this tread I decided not to answer since I was basically trying to say this, but in a LOT more boring words =p

---

Another point I figured I'd throw in; when using Rage you can also use conj / blocks to protect yourself while attacking, as well as some enemy shots missing you (thus having some potential "def" while attacking), but when using Shield, it only helps if you get hit (thus any missed bullets / conj / block protecting you help "less" than normal). Edit: So while Rage benefits more than normal from environmental factors, Shield benefits less.