See, this is the problem, you guys waste page after page talking about science when we are talking here about weapons which bear no relation to real science at all...
... and miss the more fundamental point about how fights work.
WHY would Kenobi even enter into a sabre lock? Why would the situation have even arisen?
Try thinking things through, guys. Brainpower is a very useful thing, so try and apply it.
Let's make some points clear here:
1. History is your friend. There are very important reasons why, in history, large weapons were only ever used, and were only ever useful, when fighting armoured opponents, Why? Because only a heavy weapon would penetrate the armour.
2. As soon as armour was not being used, swords switched from heavy construction to light, fast weapons. This was because you didn't need to power a blow in any more- you just needed to stab your foe with your weapon. What counted now was a lightweight, speedy weapon that could be controlled more easily and was faster.
You put a man with a claymore up against a man with a fencing sword, and the claymore guy would get hit a dozen times before he could even manage his first blow. Now, this wouldn't matter if the claymore guy was in plate armour and the rapier couldn't hurt him.
But a sabre cheats- it is light, but it is also devastating. It doesn't need to be heavy, it wins anyway. It is both fast and deadly.
3. Your lock issue... this is another seirous brain failure. You assume that when fighting with a lighter weapon, someone who knew how to use it would fight in exactly the same way as they would when fighting an equal weapon.
Say, for no readily apparent reason, Mr Claymore does get a blow in. Sure, if Mr, Rapier tries to block it directly, he'd lose his sword and probably break his arm.
But Mr. Rapier actually knows what he is doing, so he would not do that. The number of things he CAN do are impressive. He can use the superior reach and dexterity of his weapon to ensure that the blow is never going to hit in the first place. or he can use his superior mobility to get out the way.
Or, and here is the clincher, he CAN block it, he just doesn't block it directly. When blocking a heavier weapon, you don't take it straight on, you direct the force away or downwards, with an angled blade and good momentum. It's easily done and this way a lighter blade with any decent quality at all can deflect a much heavier one without any great risk to the defender.
Then once the blow is countered, Mr. Claymore's stupid, over-extended power blow of idiocy has left him wide open for a very quick kill indeed.
This is not being made up. This is real life. So if you want to live by the sword and try and apply real life logic to this argument... the sabre wins. No contest.
And so yes- a very poor state of logic here.