This might be a weird question, but...

[Jinx]

Paine is supposed to be 19 at the time of FFX-2. Auron definitely could've had her before Braska's pilgrimage.

hmmm, I think he is like 25ish on the first pilgrimage? And that was 10yrs before FFX, so Pain would've been 9 when he was 25, so he had her at 14?

I guess.

But this obviously isn't even part of the plot. You're arguing about nothing.

EDIT: And actually, Paine would've been 7, as the Braska's pilgrimage was 12 years before X-2. An 18-25 year old having a baby? Sure.