Why armor penetration?

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IS149080d6605e20d28653a

Senior Member

02-26-2013

Several times already i heard someone saying armor penetration marks are better than ad.
Why is that so, could someone explain me?


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Cenerae

Senior Member

02-26-2013

They're not.

Well, technicaly they -are- stronger mid-late game, but AD runes are stronger for early game, ie laning.

Armor pen doesn't help you much for lasthitting, AD does. AD also gives you stronger damage when trading with enemy champions, until you have your first big damage item. Around that point armor pen beats it out, but the difference isn't that big either way. And you still have weaker lasthitting power.

A mix of armor pen and AD is best, if you want to boost your dueling power. Raw AD will still be stronger until around level 4-5 or so, but then you'll be at a small advantage purely from a rune perspective.


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TheUnburned

Senior Member

02-26-2013

Considering the enemy ADC has armor seals, AD/ArPen runes are nearly the same effectiveness early on. The AD runes will help you last-hit more easily; the ArPen runes will scale better into mid-game. Runes are typically used for an early-game advantage, so it's really up to you.


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M3GaL0d0n

Senior Member

02-26-2013

Arpen runes aren't really an ADC's cup of tea, most ADCs deal a heafy chunk of magic damage which Arpen doesn't boost anyways. Arpen has evolved a bit into more of a bruiser friendly stat with boosts the late game of a bruiser, which is where they start to fall off. Some theory crafters came up with this huge spat that said Arpen runes were superior in every way to flat AD, but we've moved away from it... Its your pick, you notice a different feel once you get more experience, as for which ones to buy, AD > Arpen for your first set of reds. Otherwise do whatever. GLHF


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GundayMonday

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Senior Member

02-26-2013

They scale better into late game by letting you do more damage. Here's the details:
Armor Pen LoL Wiki
They won't help as much early game for last hitting, but they will make you do more damage in team fights later once you have some items.