User blog comment:MOTZI/Think About It - Marksman's fate/@comment-4636093-20140323081955

The reason I say that a champion in particular is a Marksman while the role they serve in is ADC is because "Marksman" describes an auto attacker like Caitlyn, Twitch or Vayne. There are AD casters which can be ADCs too like Ezreal or Lucian or most famously Urgot.

Whether Marksman or Caster, ADCs give an extreme amount of late game insurance. A single Twitch unloading his ult on the enemy team will completely stop them in their tracks, ether to stop a push, push himself or unleash insane damage on the enemy team.

However ADCs require a lot of work to use well and against an organized enemy team a lot of team support/peel too.

Marksmen have very strong level 1-2s before other champions get their skills then they become weak until they get 3-4 big items. Due to this caster ADCs are what's 'in fasion' right now, people like Lucian and Ezreal don't get destroyed as much by the bruisers and assassins during the mid game because they too scale well with levels. Because of this they are also far less team dependant and better for soloqueue.

The few Marksmen ADCs which can keep up and stand toe to toe with casters throughout the game are because of overbaring mechanics against the enemy ADC, Caitlyn's range and safety or Jinx's arsenal of CC and range.

I never used to like the role, still don't really, but I'm finding it a lot more fun now that I know the advanced stuff ADCs can pull off.