I cannot think of any ADC (not taking supports into consideration) that Vayne can beat in lane, except maybe Ashe. But then again, even Ashe can force her back and zone her hard. Ezreal is probably Vayne's easiest lane, if she maxes Q and dodges his skillshots with it. But that's only in 1v1 trades which almost never happen due to his poke and strong disengage. More of a skill matchup.