Well, burst is a tad lacking, but the mobility is nicely handled by Lunge and Slash, especially when upgraded. A handy thing with Warrior (at least sword and shield) abilities is that if they don't hit, they don't use stamina or go on cooldown, and so you can use Lunge and Slash to cross the battlefield quickly, and when upgraded, does pretty good damage when at used at range.
While SnS doesn't afford normal burst per-se, SnS is uniquely suited to destroying Guard on enemy units, when upgraded, Shield Bash does +1,200% damage to guard, and as you can see in the video, a shield bash crit entirely eliminates the dragon's guard a few times. So while it doesn't afford traditional burst like a Rogue or Mage, it can quickly burst down guard, shortening some fights significantly.
Overall the damage is adequate, it's not going to outdamage reaver or a rogue, but it's respectable in normal encounters, utilizing Lunge and Slash on ranged units for high damage, and Payback Strike after getting hit for high damage. On larger encounters or tougher mobs, TtD will make a difference, and the overall increase in party damage as a whole isn't something to scoff at.