Wish I could try playing at higher elo.

if you think that 6-slot lux should be outdamaging 6-slot adc, i don't know what to do with you.

A 6 slot lux has 1200 range A 6 slot adc does not If lux isn't doing more she's a bad lux not abusing her range.

And you have AP masteries and runes, you should have 720.72 AP. That means your full damage rotation is 1154 (+1621.62) + 25 on-hit dmg from Elixir = 2775.62 magic damage + 25 true damage. With just the default 30 MR, an enemy will mitigate 33% of your damage (except the true damage), meaning they actually take 2137.23 mgc dmg + 25 true dmg. ADC's usually get somewhere around 2k hp, so with a Bloodthirster shield, you shouldn't be able to one-shot them. If they have banshee's AND we're assuming that it's down (so they don't block any spells), they mitigate 46%, taking only 1498.89 mgc dmg + 25 true dmg. Nowhere near enough to kill them.

Here are the numbers listed out neatly: Base + scaling: 1154 (+2.25 AP) Total AP: 720.27 Total unmitigated damge: 2775.62 mgc + 25 true Apply default MR: 2137.23 mg + 25 true Apply Banshee's: 1498.89 mg + 25 true (no spells blocked)

Let's factor in the magic penetration from runes, masteries, and items. If you're running flat Mpen reds, you should have 7.8. Sorc shoes gives 15 flat penetration, Void staff gives 35%, and the penetration mastery gives 6%. This means you'll have 22.8 flat MPen and 38.9% MPen (multiplicative stacking, not additive). Against the default 30 MR, you'll still be doing 95.8% of your base. This gives you 2659.04 mgc + 25 true. Let's line up the numbers again.

Apply default MR + apply MPen: 2659.04 mgc + 25 true Apply Banshee's + apply MPen: 2011.32 mgc + 25 true

Your damage will fall off. You can't one-shot the ADC, and you can barely deal half HP to the tanks.

And you're still hitting multiple targets at once. You're still winning fights, and you're still a VERY good carry. Your damage fall off is barely noticeable unless the enemy team has a dedicated healer simply because you use it so often. You're essentially complaining that lux is a better support than carry because she can't one shot the 2200 hp adc she just snared and dealt 3/4 hp damage to in addition to damaging their teammates. Gap closer anyone? She just won the fight without even needing to shield, in addition to hurting the enemy adc's survivability by forcing them to target their 1 defensive item to her. I don't know where you got your role definitions, but that is what most people call a carry.

You're immobile, and your cooldowns are relatively long at 6.6s, 6s, 6s,

And you can kite things so hard that they're either slowed, snared, or attacking a shield at all times. From 1200 range, which is larger than almost every gap closer in the game. If lux gets caught, she dun fucked up.

and 30s with max CDR. Might seem short, but other people have skills that are ACTUALLY on 3- or 4-second cooldowns, and don't forget that ADC's will be autoattacking almost twice a second,

Yes. Auto-attacking. Which means they need certain conditions, need the enemies to be in certain positions, or have the tank dead center. The entire time the face-off in mid is happening with each team threatening the other with presence and trying to get a good engage and the adc can't deal damage, you should be. If you're not out-damaging the adc you should not be playing high range poke champions.

your ADC is doing it wrong.

Not going to dispute that point though, gold adc's are almost cringingly bad.