Birth by Sleep Is Ventus Sora's father?

Ventus looks like he's 14 - 17 years old. In KH1, Sora is about 13 - 14 years old. Since BbS takes place 10 years before KH1, Sora should be 3 - 4 years old, so if Ventus were to be his father, Sora would have been born when Ventus was:

14 - 3/4 = 11/10
15 - 3/4 = 12/11
16 - 3/4 = 13/12
17 - 3/4 = 14/13

Ventus would be a very young father, but this is a case found in real life but, I doubt Ventus is Sora's father.

<^Seraph>