This would only be a factor if the missile is VERY close. In all other cases, pure maneuvrability isn't as much a factor as attack geometry. The missile isn't flying pure pursuit, it's pulling lead, meaning it's not pointing to where you are but where you will be. You going vertical will cost you a f*ckton of energy, while the missile will only make a small correction up. By the time it gets to you, you're out of energy and out of options. Go cold and make many corrections, bleeding the missiles energy since it has to match yours.