Flat AD/AP over Penetration AD/AP during the laning phase
A very famous French streamer, and former LoL pro (EC Skyyart) always says in its streams that going for penetration items (AD/AP depending on your champ obviously) when your opponent has low armor/MR is always more worth it than going flat AD/AP. At least in early game (during the laning phase) in order to deal damage close to the "true damage".
I wonder if that is really the case when computing some calculation and reflecting over the theory. Please keep in mind that I speak about the laning phase and don't include the runes in the question.
Thanks.
Best Answer
I guess it depends on how you want to go with your early game.
If it were me, I'd get Flat AD/AP for last hitting minions. since I particularly want to earn up on gold and exp in the first few waves.
With Flat AD/AP Penetration however, you'll get a bit more of an edge when dueling / trading with your lane opponent. (especially if your opponent has low armor/MR just like you mentioned)
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