Now that someone has confirmed my suspicion that Jedi automatically "die" when your reinforcement count drops to 20 or so, I am suspicious about some of the alleged Jedi kills.
Next time you see a Jedi dying keep an eye on your reinforcement count. If it's really low and just dropped to 20 or below, that may be the cause of the death rather than whatever means you used to kill 'em.
It's undisputed that kill-pits (sarlacc, bottomless pits, cliffs, etc) and running them over with speeders/wheel droids works, but other ways, well, pay attention. There may be other ways, but don't let this fool you...