Getting a hit with SOW is just much easier than with LS and killing a Vanguard with 2 shots is more reliable.
While the coolest weapon of the bastard swords, LS is in a very sad state. No point in using it over SOW in duels and even less sense in TO when Messer is 10 times better.
It’s way more dynamic than the SoW. You can barely drag the SoW at all, but the LS is very draggable, of course nothing compared to the stupid PoS that is the messer.
LS is a great weapon to learn with.