Estimated ages of Ventus, Aqua, and Terra?

We do know that Terra is the oldest, Aqua is in the middle, and Ventus is the youngest, and that all three are fairly young, but their exact ages are not specified. Their pages at the Disney wiki (not the Kingdom Hearts wiki) suggest that Terra is 19, Aqua is 17, and Ventus is 14 (same age as Sora in the original Kingdom Hearts), but are these estimates accurate?

That seems like a fair guess. There's really not much else to go by other than their appearance.

yeah id say that was about right. id say ventus is about 15 cuz thats the age of roxas in kh2 since we dont meet him till then