It's kinda weird how people say "initiative =/= better pilot!" and then immediately go on to explain that Padme might have higher initiative because, under the circumstances, she's a better pilot.
You see this kind of thing any time there's a discussion about relative initiative numbers, and it's baffling. If initiative is an abstraction that doesn't necessarily reflect ability, then stop: that's all the explanation you need! Padme's initiative is 4 because that's what is printed on the card. Ahsoka can have a lower init and still be a better pilot than Padme; after all, it's common knowledge that the Best Pilot In The Game is initiative 1.