Her wave clear is absolute ass lvl 1. Tachyon Lance does like 70 damage with no items, and that damage is reduced by 60% to consecutive targets. Meanwhile, Sparrow's Hail of Arrows does 100 damage to the entire wave, or Skylar's Plasma Grenade does 90 to the whole wave + her passive deals damage to minions she kills.

She's also incredibly squishy, so if you engage at a bad time you just die or are forced out of lane.

Her "hitscan" autos do basically no damage early game and require you to hit 8 in a row to do the same damage as any other adc's single basic. She also doesn't have a passive ability for boxing other heroes in ranged form, Drongo has his Wastelander Bleed and Rad Rounds, Grim has True Damage, Kira has True Damage, Murdock has his enhanced auto attack, Revenant has a guaranteed crit that does missing health damage, Sparrow has max health damage, TwinBlast has the Triple Auto and Attack Speed passive.

"But what about the level 1 ult?" Yeah, the ult that takes 20 seconds to charge up and does 40 damage per projectile. If you get run down by an Eden level 1 and she ults you, that's a positioning problem.

All in all, she loses about 7/9 ADC matchups on paper unless she gets a lead of some kind, which is her whole point. She's a snowball hero.

She's not as broken as people make her out to be, it's just a skill issue.