I've always found Jetstar seats to be very cramped for leg room and I'm only average height, a couple of years ago my wife's flight was seriously delayed because the pilot didn't turn up so they sat there looking at an empty plane for 3 hours until another pilot turned up, the one credit I've give them is they fly their planes pedal to the metal with a sizzling 40 mins from Wlg to Ak albeit with a tail wind.