How much Damage would a Lightsaber do in D and D?

[hamishspence]

The "10% of total hit points damage" bit is also pretty dubious- basically- it will mean that it only takes, at most, ten good hits to kill anything, even gigantic monsters.

Even in Star Wars material, there are references to creatures with thick hides being very difficult to take out with lightsabers- blows doing only superficial damage.

Films, radio plays, scripts, movie novelizations - that's what I consider to be Star Wars. Everything else is just paid fan-fiction that Lucas can overrule whenever he feels like it.

And some of the novelizations (most notably the Episode III one, considered one of the best) make reference to events in the books or comics.

Some characters are first referred to in movie novelizations- such as Darth Bane, in the Episode I novelization.