User blog comment:Contractas1/Ashe - The most ignored concept of a carry?/@comment-10256611-20140107162339/@comment-2112140-20140108085358

Ashe counters Vayne pretty hard if she's played well. But if not, then the Vayne can outplay her and punish her. I believe comp scene should pick up on a strategy like "Protect the Ashe" and turtle while granting Ashe as much farm as she can get which would allow her to outcarry lategame.

Well as others have clarified it's not hidden power, it's potential and while the potential is the best possible outcome, your team's goal with such a strategy would be to ensure the best outcome.