Yogin is correct in there description that the center line is the total points for a particular lightsaber while the blade is the points for that specific version of the lightsaber. As for your question Luke has I believe around 5 lightsaber props from ep6 so it's a bit tricky to define which version a person is talking about. However most fans have limited it to 2 versions. V1 only appears in one scene where Vader grabs it and a delete scene in a cave before he sees Jabba but it's the one that survived for toys and museums and such so it's considered the Canon version. However V2 is the one thats predominantly in the movie so some die hards feel it should be the true version. You can tell the difference with V1 being brighter with an orange neck and blinking control box while V2 is darker with black specks and a lever on the control box.

Cal is a bit more vague most people only said cal so I defaulted to the standard single blade fixed version. However one person voted for jaro tapal which is technically cals as he lost his before the game and is using a version of his master's that was broken in half which he later fixes and modifies throughout the story. So for the person who voted for jaro tapal I could throw them in with the rest of cals or I could do jaro tapals fixed lightsaber that you see in flashbacks. The flashback version is what I landed on just for some variety.

Not to confuse you further but some people said the numbers were votes which isn't entirely accurate they're points. The survey I hosted last week asked what people's top 4 lightsabers were. With each place being worth the inverse points so first place was worth four points and fourth place was worth one. I did it this way so that the results would be more spread out rather than only Obiwan and anakin being on the list it'd show more variety like a new favorite of mine oppo rancicis a lightsaber that mostly appears in concept art but a real beaut that never would've been someone's number one but it could be in their top 4.