He rushed lethality, didn't he? Randuin's
and Ninja Tabis
are your best friends in that scenario. Trundle is auto-attack reliant just like a marksman.
All lethality does is negate the base armor of a champ. If you don't have additional armor it's your own fault. Hover over the armor stat in-game and check out the damage reduction %. It'll typically be between 20-25% for a lot of champions at level 1. Stack enough lethality to negate all of that base armor and you're basically doing that % in additional attack damage, which is why it's so effective on anyone without additional armor items. Most mages and ADCs start out around 30 armor at level 1 and climb to around 85 at level 18.
The old rune system helped since everyone ran +Armor. Lethality has a lot more impact early game now. I'm bad with the formula, but if someone has 29 base armor, Jhin for instance, and the enemy has 29 lethality, that technically means you'd be losing that 22% damage reduction, and they'd be doing 22% more damage to you. --- It should be a 1 / 1 ratio on the lethality / base armor if I remember correctly. --- And this is why lethality is sometimes stronger than building crit early to mid game on a lot of champions: it's guaranteed calculated damage on demand rather than praying for a lucky crit.
https://imgur.com/ODIqFs1
I did this a few games back when a Talon and Yasuo wouldn't stop bullying me. --- They finally learned their lesson, and Talon could no longer solo me, although he kept trying, probably because he didn't understand the lethality mechanics. Abuse people who don't understand how it works and you'll be out of Bronze in no time. I was ignorant about all of it for a very long, long time.
You have to be more choosy with equipment down here in Low Eloville. Sometimes I build weird sh*t as an ADC just because I know I won't get a peel in team fights. What's the point of having high AD if you can't stay alive for more than 2 seconds in a team fight?
https://media.discordapp.net/attachments/310955598948728833/399561628779151360/23234.jpg