I'm fairly sure that the stab outranges the long hafted blade, even the right swing. You can only comfortably outrange everything 2h swords can throw at you with a long voulge (which is, however, not a great dueling weapon), but this IS balanced, the new stab is sensible (unlike the old which outranged everything short of a pike), and gives some advantage to the overall more expensive 2h swords, which have shorter sideswings anyway.
The 2h sword stab is fine and sensible, how else would you thrust with a twohanded sword (bar halfswording for extra damage, which is however gimped at the moment)? The old one was silly with 2m range and super-instakill amount of pierce damage, it's fine now.