Agreed! Well put, SE.
Back to the argument at hand, I still maintain that magic swords are an exception to the underdevelopment rule, and maintain that lightsabers fit under this amnesty. However, you make a very good point that most of the Jedi rely on a lot of other techno gizmos.
Therefore, here's what I think will happen: the Jedi start off confident, and mow through hoards of lesser ninjas (who haven't yet been figured into this equation--but they have to exist. I mean, what's a good battle without hundreds of lesser minions to defeat?)
Then, however, they will start to rely too much on their gadgets, and the ninjas will take them out one at a time. In the end, only one Jedi will be left (I vote Mace Windu), and he'll weaponless and beaten down. He'll grow 'indignant' (Jedi don't get angry) over the deaths of his comrades, and pick up a discarded lightsaber he finds somewhere, then proceed to lay righteous smack down on the rest of the ninjas.
Then he'll walk away looking cool, torn cloak flapping, bodies littering the ground around him.