Not... really?
The adc is the prime tower buster, and they get a support to aid them in vision (seriously, buy wards occasionally. You can get a lot more map coverage if you help them, not just rely on them) and compensate for their (usually) weaker early game. When they get fed, they're prime for dueling (not bursting, but dueling. Usually).
The adc should focus objectives over getting kills, and they have an easier time doing it (glass cannon AD + range) than other champions do. If you can do that, you can carry just fine. Carrying isn't just roaming (and I'm sensing a "carrying=getting kills" vibe here), it's securing the objectives that may or may not include killing priority targets to secure victory.