Never made a mention about her losing the lane, I just don't see her scaling very well into late game. Other ranged dps champs have abilities that scale well for the late game, like ashe's slow and ult, or kogmaw's w, but cait just doesn't seem to have any of that. Her range is like her only selling point, and that slight distance means jackshit for most competent players. Even with a farm, she still doesn't seem to have the same damage output I see with other comparable dps that get the same farm.
Don't get me wrong, I enjoy playing cait just as much as the next guy, but she's really more of a fuck around champ rather than a tryhard champ to me.