Weakness of light armor versus medium

florian.billeb16_ESO

I ask me about the real weakness of light armor

Light armor give bonus for:
1) spell cost reduction
2) % crit
3) debuff spell resistance (but almost nothing 980 1 times every 8 sec)
4) regen mana
other thing are not so important

Medium armor give bonus for:
1) stamina reduction
2) % crit
3) regen stamina
4) % power weapon (12%)
other thing are not so important

Conclusion: bonus are almost the same: but medium armor offer 3 times more spell resistance and armor

For example if hardcap (hypothetical) is 30'000 armor
When you have 5000 in light armor you will have 15'000 in medium

for 1000 damage, medium armor will take 750 and light armor will take 950
It's a quick calculation, about the fact, for the same bonus between light and medium armor, the medium armor (so stamina build) will offer much more utility.

It's completely logic about armor, but not logic about spell resistance on medium armor.

and just a other comparison between regen mana in light and heavy armor

Heavy armor 1 hit every 4 second give mana back: 336 = 84 per second
Light armor 28 % of regen mana: on 600 mana regen it's 168 every 2 second = 84 per second

No real bonus in fight for regen mana to have light armor...

Celless

Use the light armor ability, Annulment, to create a damage shield against magic. If you are wearing light armor, you may be using a magicka build. If you are using a magicka build, Annulment will help you actively resist spells.

Like a mage casting a ward.

Nacario

You overlooked what possibilities light armor provide over medium armor. Light is for magica, and magica is something the majority of skills scale from such as heals and shields. Being a light armor magica user you have less armor but it makes up for the active defensives you have access to, for example healing ward or class skills or skills, and all of them again have their own passives that benefits light/magica. You cant look at just the armor, look at what the effect is as a whole.

florian.billeb16_ESO

yes, light armor goes with magicka, medium armor with stamina...
new heal is scale on stamina for example... but it's not the point.

My question is simple, there will be no problem in PVP (PVE is a little different) that almost everybod will wear medium or heavy armor.

You don't care about critique normally in PVP
What is important: magicka (or stamina), life, spell power, weapon damage and in 1.6. armor.
As I show in a edit, the regen mana in heavy armor will be the same